How do you factorise this?" "x^3 -3(x+1) -(x+9)

1 Answer
May 17, 2018

x^3-4x-12

Explanation:

x^3-\color(red)(3(x+1))-(\color(blue)(x+9))
Distribute: x^3-[\color(red)(3(x)+3(1))]-x-9

x^3-3x-3-x-9
x^3-4x-12