what is the answer to (x^2 + 6x +5) + (4x^3 + 9x^2 - 12)

what is  the answer to (x^2 + 6x +5) + (4x^3 + 9x^2 - 12)? This expression needs to be simplifyed. The is a 8th grade level question which is Pre-Algebra. There are also muilt-choise answers in this problem.

A. 4x^3 + 10x^2 - 6x - 17

B. 5x^3 + 15x - 7

C. 4x^3 + 10X2 + 6x - 7

D. 4^3 -15x + 7
in Factors of a number by Level 1 User (120 points)

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1 Answer

The right answer is letter C. 4x^3+10x^2+6x-7
by Level 12 User (101k points)

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