Question

Subtract and simplify: (10x4 – 2x + 7) – (6x4 + 2x3 – 4x2 – 1) A. 4x4 – 2x3 + 4x2 – 2x + 6 B. 4x4 + 2x3 – 4x2 – 2x + 8 C. 4x4 – 2x3 + 4x2 – 2x + 8 D. 16x4 + 2x3 + 4x2 – 2x + 8

Answer 1

(10x^4  - 2x + 7) - (6x^4 + 2x^3 - 4x^2 - 1)=

$= 10x^4-2x+7-6x^4-2x^3+4x^2+1=\\\\ = 4x^4-2x^3+4x^2-2x+8$