Question

factorise x square+x-2

Answer 1

x^2-2x+x-2
x(x-2)+1(x-2)
(x+1)(x-2)

hope it helps!!

Answer 2

x square+x-2
= x square +(2x - x ) - 2
= x (x + 2) - 1(x + 2)
= (x+2)(x-1)
then
x+2= 0
x = -2
thus
x-1= 0
x = 1