Question

fsctorise x^ +x -156​

Answer 1

Hey,

$x {}^{2} + x - 156 = 0 \\ \\ = > x {}^{2} + 13x - 12x - 156 = 0 \\ \\ = > x(x + 13) - 12(x + 13) \\ \\ = > (x - 12)(x + 13) = 0 \\ \\ = > x = 12 \: or \: - 13$

i hope it helps you!!