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

asked Jan 4, 2020 223k views

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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

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4 votes

simplify step-by-step

$5 {x}^(7) + 7 {x}^(8) - (4 {x}^(4) - 2 {x}^(8) )$
ANSWER

$9 {x}^(8) + 5 {x}^(7) - 4 {x}^(4)$

Gebb answered Jan 8, 2020

by Gebb

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