Question

3x(x + 4) + 3(x + 4) = 0

Answer 1

answer

$3x^{2}+15x+12=0$

Step-by-step explanation:

equation: 3x(x + 4) + 3(x + 4) = 0

distribute 3x into your (x+4)

that'll give you : $3x^{2} +12x+3(x+4)=0$

now distribute your 3 into your (x+4)

that'll give you $3x^{2} +12x+3x+12=0$

now combine like terms and you'll end up with

$3x^{2} +15x+12=0$

hope this helps