1 / 7

Quadratics

quadratic equations

tripmob
Download Presentation

Quadratics

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. Starter: Multiplication Grids 310 times 24: 310 x 24 =6000+200+1200+40 =7440 DECK GRASS GRASS POOL

  2. The Quadratic Format Z ax2 + bx + c The constant A number on its own The coefficient of x2 The coefficient of x How many lots of x2 there are How many lots of xthere are a, b & c can be zero, positive numbers or negative numbers

  3. Factorising Quadratics Z We are going to start with a = 1, so we have: • = (x±?)(x±?) x2 + bx + c (x±?) x2 Part of bx* DECK GRASS (x±?) Part of bx* c GRASS POOL * Add the two parts together to make bx

  4. Factorising Quadratics Z Looking at an example: x2 + 4x + 3 = (x )(x ) Steps: Create the Pool Check if the Grass fits If not, find alternative sizes for the pool & repeat DECK x2 GRASS Part of bx* GRASS Part of bx* c POOL

  5. Factorising Quadratics Z Including negatives: x2 – 4x + 3 = (x )(x ) Steps: Create the Pool Check if the Grass fits If not, find alternative sizes for the pool & repeat DECK x2 GRASS Part of bx* GRASS Part of bx* c POOL

  6. Factorising Quadratics Z Sometimes you will have lots of options for the pool: x2 + 2x – 8 = (x )(x ) Steps: Create the Pool Check if the Grass fits If not, find alternative sizes for the pool & repeat x2 DECK GRASS Part of bx* GRASS Part of bx* c POOL

  7. Your Turn Z 1. x2 + 5x + 6 = (x )(x ) 2. t2 + 5t + 4 = (t )(t ) 3. m2 + 7m + 10 = (m )(m ) q2 – q – 56 Steps: Create the Pool Check if the Grass fits If not, find alternative sizes for the pool & repeat x2 DECK GRASS Part of bx* GRASS Part of bx* c POOL

More Related