Question

Need help multiple choice please!

Answer 1

Answer:

it is A

Step-by-step explanation:

you need to distribute the terms $3x^2$ and -4 into their respective parentheses.

$3x^2*x =3x^3$

$3x^2*3=9x^2$

so the left side completed is  $3x^3+9x^2$

next do the other side

$-4*1 =-4$

$-4*-2x^2 =8x^2$  (remember - * - = +)

Right side complete is$-4+8x^2+7$

both put together is $3x^3+9x^2-4+8x^2+7$

combine like terms to get

$3x^3+17x^2+3$