Question

FACTORISE (x2+x)2+4(x2+x)-12

Answer 1

let x²+x=t
then t²+4t-12=t²+2(2)t+4-4-12=(t+2)²-16
put the value ot t
(x²+x+2)²-4²=(x²+x+2+2)(x²+x+2-2)=(x²+x+4)(x²+x)

Answer 2

Answer:

(x^2+x-2)(x^2+x+6) is the a nswer