Question

(7x^3-6+5x^2)+(6x^4-2-6x^3)+(4x^2+3x^4+8x)

Answer 1

9x^4+x^3+9x^2+8x-8, I believe

Answer 2

7x^3 - 6 + 5x^2 + 6x^4 - 2 - 6x^3 + (4x^2 + 3x^4 + 8x)

7x^3 - 6 + 5x^2 + 6x^4 - 2 - 6x^3 + 4x^2 + 81 +8x

x^3 - 6 + 5x^2 + 6x^4 - 2 - 6x^3 + 4x^2 + 81 +8x

X^3 +73 + 5x^2 + 6x^4 + 4x^2 +8x

X^3 +73 + 9x^2 + 6x^4 +8x

the correct answer is

6x^4 + x^3 + 9x^2 +8x +73