Question

Factorise :
(vii) x3 + 3x² - 7x
-6​

Answer 1

Step-by-step explanation:

x3+3x2+3x-7

=x3+3.x2.1+3.x.12+13-8

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

=(x+1-2){(x+1)2+2.(x+1)+22}

=(x-1)(x2+2x+1+2x+2+4)

=(x-1)(x2+4x+7)

hope it helps

Answer 2

Answer:

X3+9x² -7x-6

=x²(x+9)-1(7x+6).

=(X+9)(x²-1)