Question

(–7x – 5x4 + 5) – (–7x4 – 5 – 9x)
A. 2x^4 + 2x + 8
B. –14x^4 + 10x + 10
C. –14x^4 – 10x + 10
D. 2x^4 + 2x + 10

Answer 1

Opening the bracket,

\(\Large \color{MidnightBlue}{\Rightarrow -7x - 5x^4 + 5 + 7x^4 + 5 + 9x }\)

Operate on the like terms.
\(\Large \color{MidnightBlue}{\Rightarrow 2x^4 + 2x + 10 }\)