Question

Question num
21. Factorise: xº + 13x' + 32x + 20
nntually calculating the cubes, find the valu​

Answer 1

(x+1)(x+10)(x+2)

Explanation:

x^3 + 13x^2+ 32x+20

=x^3+ x^2+12x^2+12x+20x+20

=x^2(x+1)+12x(x+1)+20(x+1)

(x+1)(x^2+12x+20)

=(x+1))(x^2+2x+10x+20)

=(x+1)(x+10)(x+2)