Find the sum and choose the correct answer.2n 3 + 4n 2 - 7 and -n 3 + 8n - 9

The correct answer for the sum is : n^{3} + 4n^{2} + 8n -16

Step-by-step explanation:

We start by adding each n term, n3 with n3 and the same with n2, n and then numbers

(2-1)n^{3}

(4+0)n^{2}

(8+0)n

(-7-9)

37 = ending with 7

unit's digit in the cube..3

56 = ending with 6

unit's digit in the cube..2

133 = ending with

unit's digit in the cube..7

hope it : ( : )