Question

Use the grouping method to factor this polynomial.

x3+3x2+3x+9
A. (x2 + 2)(x+3)
B. (x2+3)(x + 3)
C. (x2 + 2)(x+2)
D. (x2 + 3)(x+2)

Answer 1

(x^2 + 3)(x + 3)

Explanation:

Here, we want to factorize

we have this by grouping the 4 into 2 groups each as follows

x^2(x + 3) + 3(x + 3)

= (x^2 + 3)(x + 3)