1 / 5

Quadratic Factorising

Quadratic Factorising. If you can long multiply you can factorise!. 24 x 28. (20 + 4)(20 + 8). 20. 4. 24 28 192 480 672. x. 20. 400. 80. 8 x 24. 480. +. 20 x 24. 8. 160. 32. 192. 400 80 160 32. +. 672. 1. ( a + 4) x ( a + 8). ( a + 4)( a + 8). a.

albertam
Download Presentation

Quadratic Factorising

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Quadratic Factorising If you can long multiply you can factorise!

  2. 24 x 28 (20 + 4)(20 + 8) 20 4 24 28 192 480 672 x 20 400 80 8 x 24 480 + 20 x 24 8 160 32 192 400 80 160 32 + 672 1

  3. (a + 4) x (a + 8) (a + 4)(a + 8) a 4 (a + 4) (a + 8) 8a + 32 x a a2 4a 8(a + 4) a2 + 4a + a(a + 4) a2 + 4a a2 + 12a + 32 8 8a 32 8a + 32 a2 4a 8a 32 + a2 + 12a + 32 2

  4. (a - 4) x (a + 8) (a - 4)(a + 8) a -4 (a- 4) (a + 8) 8a- 32 x a a2 -4a 8(a- 4) a2-4a + a(a- 4) a2-4a a2 + 4a- 32 8 8a -32 8a- 32 a2 -4a 8a -32 + a2 + 4a - 32 3

  5. (a - 4) x (a - 8) (a - 4)(a - 8) a -4 (a- 4) (a- 8) 8a + 32 x a a2 -4a 8(a- 4) a2-4a + a(a- 4) a2-4a a2-12a + 32 -8 -8a +32 -8a + 32 a2 -4a -8a +32 + a2-12a + 32 4

More Related