<< Chapter < Page Chapter >> Page >

Wiskunde

Graad 8

Getallestelsel

(natuurlike- en telgetalle)

Module 6

Deling in algebra

KLASOPDRAG 1

  • Kom ontdek stap vir stap meer omtrent DELING in ALGEBRA
  • Skryf die volgende breuk in sy eenvoudigste vorm 45 36 size 12{ { {"45"} over {"36"} } } {} = ........................
  • Net soos wat jy gewone breuke in eenvoudigste vorm kan skryf, kan jy ook algebraïese breuke in eenvoudigste vorm skryf.

Hoe sal die volgende in sy eenvoudigste vorm lyk? 6 a 2 b 3 ab size 12{ { {6 size 11{a rSup { size 8{2} } b}} over { size 12{3 bold "ab"} } } } {} = .........................

Ja dit lyk eintlik so: 6 × a × a × b 3 × a × b size 12{ { {6 times size 11{a} times size 11{a} times size 11{b}} over {3 times ` size 11{a}` times ` size 11{b}} } } {} = 2 × a × 1 × 1 1 × 1 × 1 size 12{ { {2 times size 11{a} times 1 times 1} over {1 times `1` times `1} } } {}

(Nou kan jy al die terme wat bo en onder dieselfde is kanselleer)(Wat bly nou bo en onder oor? Skryf dan net jou antwoord neer)

  • Daar is ‘n kortpad vir die terme met eksponente: m 5 m 7 = size 12{ { { size 11{m rSup { size 8{5} } }} over { size 12{m rSup { size 8{7} } } } } size 12{`={}}} {} .........................

Kan jy die kortpad sien? Ja, 7 - 5 = 2. Dus bly m² onder die lyn oor.

Antwoord : 1 m 2 size 12{ { {1} over { size 11{m rSup { size 8{2} } }} } } {}

1. Vereenvoudig nou die volgende:

1.1 18 m 5 9m 2 size 12{ { {"18" size 11{m rSup { size 8{5} } }} over { size 12{9m rSup { size 8{2} } } } } } {} ..................................................

1.2 15 p 4 y 7 3p 7 y 3 size 12{ { {"15" size 11{p rSup { size 8{4} } y rSup { size 8{7} } }} over { size 12{3p rSup { size 8{7} } y rSup { size 8{3} } } } } } {} ..................................................

1.3 ( 4 m 2 ) 2 2 m 6 size 12{ { { \( 4 size 11{m rSup { size 8{2} } } size 12{ \) rSup { size 8{2} } }} over {2 size 11{m rSup { size 8{6} } }} } } {} ..................................................

1.4 4 ( 2 m 2 ) 5 2 ( m 2 ) 2 size 12{ { {4 \( 2 size 11{m rSup { size 8{2} } } size 12{ \) rSup { size 8{5} } }} over {2 \( size 11{m rSup { size 8{2} } } size 12{ \) rSup { size 8{2} } }} } } {} ..................................................

1.5 8 a 2 ( a 2 ) 2 8 a 2 size 12{ { {8 size 11{a rSup { size 8{2} } } size 12{ \( }a rSup { size 8{2} } size 12{ \) rSup { size 8{2} } }} over {8 size 11{a rSup { size 8{2} } }} } } {} ..................................................

1.6 25 a 2 b 3 c 4 . 4 ab 3 c 2 15 a 3 b 4 c 5 size 12{ { {"25" size 11{a rSup { size 8{2} } b rSup { size 8{3} } c rSup { size 8{4} } } size 12{ "." 4} bold "ab" rSup { size 8{3} } c rSup { size 8{2} } } over { size 12{"15"a rSup { size 8{3} } b rSup { size 8{4} } c rSup { size 8{5} } } } } } {} ..................................................

2. Onthou: 1 3 b ( 9 a ) size 12{ { {1} over {3} } size 11{b} \( 9 size 11{a} \) } {} = 1 × b 3 × 9 a 1 size 12{ { {1 times size 11{b}} over {3} } times { {9 size 11{a}} over {1} } } {} = b × 9 a 3 = 9 ab 3 size 12{ { { size 11{b} times 9 size 11{a}} over {3} } `=` { {9 size 11{ bold "ab"}} over {3} } } {} = 3 ab

Dus: 1 3 size 12{ { {1} over {3} } } {} beteken: x 1 ÷ 3

Vereenvoudig die volgende: 1 / 3 ( 4 a - 6 b )

2.1 Skryf elk van die volgende in ‘n vereenvoudigde vorm.

2.1.1 1 5 size 12{ { {1} over {5} } } {} x a ..................................................

2.1.2 1 5 size 12{ { {1} over {5} } } {} (2 a ² - 15) ..................................................

2.1.3 (2 a - 8 b + 12 c ) ÷ 2 ..................................................

2.1.4 6 a 2 b 2 c 3 - 15 a 4 b 6 c 7 + 27 b 9 c 10 3a 2 b 4 c 3 size 12{ { {6 size 11{a rSup { size 8{2} } b rSup { size 8{2} } c rSup { size 8{3} } } size 12{" - 15"}a rSup { size 8{4} } b rSup { size 8{6} } c rSup { size 8{7} } size 12{" "+" 27"}b rSup { size 8{9} } c rSup { size 8{"10"} } } over { size 12{3a rSup { size 8{2} } b rSup { size 8{4} } c rSup { size 8{3} } } } } } {}

2.1.5 7 m 2 pq 9 - 49 m 6 n 7 - 35 p 6 q 12 7 mn 3 q 4 size 12{ { {7 size 11{m rSup { size 8{2} } bold "pq" rSup { size 8{9} } } size 12{" - 49"}m rSup { size 8{6} } n rSup { size 8{7} } size 12{" - 35"}p rSup { size 8{6} } q rSup { size 8{"12"} } } over { size 12{ - 7 bold "mn" rSup { size 8{3} } q rSup { size 8{4} } } } } } {}

HUISWERKOPDRAG 1

1. Vereenvoudig:

1.1 - 56 p 7 q 7 -8 mn 3 q 4 size 12{ { {"- 56" size 11{p rSup { size 8{7} } q rSup { size 8{7} } }} over { size 12{"-8" bold "mn" rSup { size 8{3} } q rSup { size 8{4} } } } } } {}

1.2 3 a 2 bc 4 - 36 a 4 b 7 + 24 a 3 b 2 -3 ab 2 c 2 size 12{ { {3 size 11{a rSup { size 8{2} } bold "bc" rSup { size 8{4} } } size 12{" - 36"}a rSup { size 8{4} } b rSup { size 8{7} } size 12{" "+" 24"}a rSup { size 8{3} } b rSup { size 8{2} } } over { size 12{"-3" bold "ab" rSup { size 8{2} } c rSup { size 8{2} } } } } } {}

1.3 ½ (5 a ² - 25 b )

1.4 ( a 2 b 2 ) 3 . ( ab 2 ) 4 a 2 b 3 size 12{ { { \( size 11{a rSup { size 8{2} } b rSup { size 8{2} } } size 12{ \) rSup { size 8{3} } "." \( } size 11{ bold "ab" rSup { size 8{2} } } size 12{ \) rSup { size 8{4} } }} over { size 11{a rSup { size 8{2} } b rSup { size 8{3} } }} } } {}

1.5 3 ( 4 kp 4 ) 2 2 k 3 p 2 size 12{ { {3 \( 4 size 11{ bold "kp" rSup { size 8{4} } } size 12{ \) rSup { size 8{2} } }} over {2 size 11{k rSup { size 8{3} } p rSup { size 8{2} } }} } } {}

2. As P = 3 ab ² + 6 a ² en Q = 2 ab , bereken:

2.1 2 P - 3 Q

2.2 P Q size 12{ { { size 11{P}} over { size 11{Q}} } } {}

2.3 P + Q 2 Q size 12{ { { size 11{P}`+` size 11{Q}} over {2 size 11{Q}} } } {}

3. As 5 a 3 b ² boeke (-5 ab + 15 a 4 b 7 ) rand kos, bereken wat sal een boek kos?

Assessering van myself: deur myself: Assessering deur opvoeder:
Ek kan… 1 2 3 4 Kritieke Uitkomste 1 2 3 4
breuke in hul eenvoudigste vorm uitdruk; (Lu 2.2; 1.6.2) Kritiese en skeppende denke
algebraïse breuke in hul eenvoudigste vorm uitdruk; (Lu 2.2; 1.6.2; 2.8.3; 2.8.4; 2.8.5; 2.8.6) Deelname
terme met eksponente vermenigvuldig en deel. (Lu 2.2; 1.6.2; 1.6.3) Organisering en bestuur
Prosessering van inligting
Kommunikasie
Probleemoplossing
Selfstandigheid

goed gedeeltelik nie goed nie

Kommentaar deur die leerder: My plan van aksie: My punte:
Ek is besonder tevrede met die standaard van my werk. < Datum :
Ek is tevrede met die vordering van my werk. Uit:
Ek het hard gewerk, maar is nie tevrede met my prestasie nie. Leerder :
Ek het nie my beste gelewer nie. >
Kommentaar deur ouers: Kommentaar deur opvoeder:
Handtekening: Datum : Handtekening: Datum :

Tutoriaal: (Algebra)

Totaal: 70

Vraag 1

A. Sê of die volgende stellings WAAR of ONWAAR is en verbeter die foutiewe stellings.

1. Die grondtal van 2 x size 12{x} {} 3 is 2 x size 12{x} {} .

2. Die aantal terme in die uitdrukking is DRIE:3(5 a + 2) + 5 b - 6

3. -10 ½<-10,499

4. -2² = -4

5. Die eerste priemgetal is 1.

Questions & Answers

what is phylogeny
Odigie Reply
evolutionary history and relationship of an organism or group of organisms
AI-Robot
ok
Deng
what is biology
Hajah Reply
the study of living organisms and their interactions with one another and their environments
AI-Robot
what is biology
Victoria Reply
HOW CAN MAN ORGAN FUNCTION
Alfred Reply
the diagram of the digestive system
Assiatu Reply
allimentary cannel
Ogenrwot
How does twins formed
William Reply
They formed in two ways first when one sperm and one egg are splited by mitosis or two sperm and two eggs join together
Oluwatobi
what is genetics
Josephine Reply
Genetics is the study of heredity
Misack
how does twins formed?
Misack
What is manual
Hassan Reply
discuss biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles
Joseph Reply
what is biology
Yousuf Reply
the study of living organisms and their interactions with one another and their environment.
Wine
discuss the biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles in an essay form
Joseph Reply
what is the blood cells
Shaker Reply
list any five characteristics of the blood cells
Shaker
lack electricity and its more savely than electronic microscope because its naturally by using of light
Abdullahi Reply
advantage of electronic microscope is easily and clearly while disadvantage is dangerous because its electronic. advantage of light microscope is savely and naturally by sun while disadvantage is not easily,means its not sharp and not clear
Abdullahi
cell theory state that every organisms composed of one or more cell,cell is the basic unit of life
Abdullahi
is like gone fail us
DENG
cells is the basic structure and functions of all living things
Ramadan
What is classification
ISCONT Reply
is organisms that are similar into groups called tara
Yamosa
in what situation (s) would be the use of a scanning electron microscope be ideal and why?
Kenna Reply
A scanning electron microscope (SEM) is ideal for situations requiring high-resolution imaging of surfaces. It is commonly used in materials science, biology, and geology to examine the topography and composition of samples at a nanoscale level. SEM is particularly useful for studying fine details,
Hilary
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Wiskunde graad 8. OpenStax CNX. Sep 11, 2009 Download for free at http://cnx.org/content/col11033/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Wiskunde graad 8' conversation and receive update notifications?

Ask