Question

9. Factorize: x3 +13.x2 + 32x+ 20 if (x + 2) is a factor (long division).​

Answer 1

Step-by-step explanation:

x3 +13.x2 + 32x+ 20 = x3 + 2x2 + 11x2 + 22x + 10x + 20

= X2(X+2) + 11x(X+2) + 10(X+2)

= (X+2)(X2 + 11x + 10)