Download presentation

Presentation is loading. Please wait.

Published bySavion Holdway Modified over 2 years ago

1
Brackets & Factors OCR Stage 6

2
What is 3(2 + 4) ? 3 ‘lots’ of ‘2 + 4’= 3 ‘lots’ of 6= 18 2 4 3 x 6 12 = 18

3
What is 3(x + 4) ? x 4 3 x 3x12 = 3x + 12 3 ‘lots’ of ‘x + 4’

4
What is 5(2x + 1) ? 2x 1 5 x 10x5 = 10x + 5 5 ‘lots’ of ‘2x + 1’

5
What is 4(x - 2) ? x -2 4 x 4x-8 = 4x - 8 4 ‘lots’ of ‘x - 2’

6
What is x(x + 3) ? x 3 x x x2x2 3x = x 2 + 3x x ‘lots’ of ‘x + 3’ What is x times x?

7
What is 2x(x - 3) ? x -3 2x x 2x 2 -6x = 2x 2 – 6x 2x ‘lots’ of ‘x - 3’

8
What is -x(2x + 3) ? 2x 3 -x x -2x 2 -3x = -2x 2 – 3x -x ‘lots’ of ‘2x + 3’ We call this process ‘expanding a bracket’

9
Factorising an expression This is the reverse of expanding a bracket Eg Factorise 4x + 2 What is a Factor? A FACTOR of a number is a number that divides into the number EXACTLY

10
Eg Factorise 4x + 2 What number divides into BOTH parts of the expression EXACTLY? 2 4x + 2 2x+1 = 2(2x + 1) How could we check this?

11
Eg Factorise 6x - 9 What number divides into BOTH parts of the expression EXACTLY? 36x - 9 2x- 3 = 3(2x – 3)

12
Eg Factorise x 2 + x What number divides into BOTH parts of the expression EXACTLY? xx 2 + x x+ 1 = x(x + 1)

13
Eg Factorise 8x 2 – 4x What number divides into BOTH parts of the expression EXACTLY? 4x8x 2 – 4x 2x- 1 = 4x(2x - 1)

14
Eg Factorise 6 - 4x 2 What number divides into BOTH parts of the expression EXACTLY? 26 - 4x 2 3- 2x 2 = 2(3 – 2x 2 )

Similar presentations

Presentation is loading. Please wait....

OK

Brackets An introduction to using brackets in algebra.

Brackets An introduction to using brackets in algebra.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on computer graphics by baker Ppt on blue eyes technology free download Ppt on chromosomes and genes and dna Ppt on field study 3 Download ppt on area related to circles for class 10 Ppt on shell and tube heat exchanger Ppt on instrument landing system diagram Ppt on teamviewer 9 Ppt on real estate business Controller area network seminar ppt on 4g