Question

Factorise the following. a) x^2 - 2x - 15 b) x^2 + 4x - 60

Answer 1

Step-by-step explanation:

$a.) \: x {}^{2} - 2x - 15$

$x {}^{2} - 2x - 5 \times 3$

$x(x - 2) - 15 \: answer$

$b.) \: x {}^{2} + 4x - 60$

$x {}^{2} + 4x - 15 \times 4$

$x(x + 4) - 60 \: answer$