Answers
Factorisation
Answers given with working shown
1. (x + 2)(x + 6) = 0
so either:
(x + 2) = 0 so x = -2 or (x + 6) = 0 so x = -6 solutions x = -2 x = -6
2. (x + 1)(x - 4) = 0
so either:
(x + 1) = 0 so x = -1 or (x - 4) = 0 so x = 4 solutions x = -1 x =
3. (x + 4)(x + 7) = 0
so either:
(x + 4) = 0 so x = -4 or (x + 7) = 0 so x = -7 solutions x = -4 x = -7
4. (2x - 1)(x + 3) = 0
2x - 1 = 0 or x + 3 = 0 so x = -3 solutions x = 1/2 x = -3
2x = 1
x = 1/2
5. (4x - 3)(x - 2) = 0
so either:
4x - 3 = 0 or x - 2 = 0 so x = 2 solutions x = 3/4 x = 2
4x = 3
x = 3/4
6. (x + 2)(x + ) = 0
so either:
x + 2 = 0 so x = -2 or x + 6 = 0 so x = -6 solutions x = -2 x = -6
7. (x + 7)(x - 5) = 0
so either:
x + 7 = 0 so x = -7 or x - 5 = 0 so x = 5 solutions x = -7 x = 5