Question

simplify the following expression. 3x(4x - 3)

a. 12x^2 + 5x
b. 12x^2 - 5x
c. 12x^2 + 13x
d. 12x^2 - 9x

Explanation:

Step1: Apply distributive property

$3x(4x - 3)=3x\times4x-3x\times3$

Step2: Multiply terms

$3x\times4x = 12x^{2}$ and $3x\times3 = 9x$, so the expression becomes $12x^{2}-9x$

Answer:

D. $12x^{2}-9x$