Question

Please help !! Simplify the following expression

Answer 1

$x^{4} + 3 x^{3} - 2x^{3} - 5 x^{2} - x + x^{2} + x + 1 + 7 x^{4}$

Collect the terms. Meaning, collect all exponents in to one whole exponent (e.g. combine the x^4 and 7x^4).

$8x^{4} + x^{3} - 4 x^{2} + 1$

Therefore your answer is [B].

Answer 2

8x^4 + x^3 - 4x^2 +1. I believe the answer is B. Please correct me if I am wrong.