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djverab [1.8K]
3 years ago
7

Need help multiple choice please!

Mathematics
1 answer:
dem82 [27]3 years ago
4 0

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

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