Question

22. One factor of x² + 2x - 8 is

Answer 1

(x-2)(x+4)

Explanation:

x² + 2x - 8 = x² + 2x +1 - 9 = x² + x +x+1 - 9 = x(x+1) +(x+1) - 9

=
`(x+1)^(2)` -
`3^(2)`

= (x+1-3)(x+1+3)

= (x-2)(x+4)