Question

Which of the following is equivalent to (x+4)(3x^2+2x)?

Answer 1

C

Explanation:

When expanding brackets, we distribute the left terms inside the right side brackets.

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

(x + 4)(3x²) + (x + 4)(2x)

The reason why it is + (x + 4) is because the x has a positive sign.