Question

Which expression is equivalent to (5x^7+7x^8) − (4x^4−2x^8)?

A. 9x^8 + 5x^7−4x^4
B. 3x^8 + 7x^7
C. 12x^8 − 2x^4
D. 5x^8 + 5x^7 + 4x^4

Answer 1

simplify step-by-step
$5 {x}^{7} + 7 {x}^{8} - (4 {x}^{4} - 2 {x}^{8} )$
ANSWER
$9 {x}^{8} + 5 {x}^{7} - 4 {x}^{4}$