Question

(3x + 4)(x + 2x + 3)

Answer 1

9x^2 + 21x + 12

Explanation:

(3x+4)(x+2x+3)

Combine x and 2x to get 3x.

(3x+4)(3x+3)

Apply the distributive property by multiplying each term of 3x+4 by each term of 3x+3.

9x^2 + 9x + 12x + 12

Combine 9x and 12x to get 21x.

9x^2 + 21x + 12