Quadratics

Question 1

complete the square

Answer 1

• ## if theres a coefficient, factorise it out

Question 2

difference of two squares

Answer 2

• in the form (a+b)(a-b)

Question 3

using the quadratic formula

Answer 3

• if simple factorisation DOES NOT work because the last number cannot be factorised

Question 4

FIND X / FIND Y on graph

Answer 4

how to find x intercept:
- find on graph
- what the value of x is when y is 0
how to find y intercept:
- find on graph
- what the value of y is when x is 0

Question 5

factorise in the form x^2 + bx + c
OR
factorise in the form ax^2 + bx + c

Answer 5

1. IF THERES A COEFFICIENT, multiply with C
2. see what numbers multiply to make c but add to make b - E.G. x and y
3. organise it in the form x^2 + x + y + c
4. then split in half
5. factorise each half
6. put them together