Question

(6k^4-k^3-8k)-(5k^4+6k-8k^3)​

Answer 1

( 6 4 − 1 3 − 8 ) − 1 ( 5 4 + 6 − 8 3 )

Explanation:

Rearrange terms

( 6 4 − 1 3 − 8 ) − 1 ( 5 4 + 6 − 8 3 ) ( 6 4 − 1 3 − 8 ) − 1 ( 5 4 − 8 3 + 6 )

distribute

(6 4 − 1 3 − 8 ) − 1 ( 53 4 − 8 3 + 6 ) (6 4 − 1 3 − 8 ) − 5 4+ 8 3 − 6

Eliminate redundant parentheses

combine like terms

multiply like 1

solution: 4 + 7 3 − 1 4

Answer 2

9y⁴−9y

Explanation:

Subtract 8y48y4 from 5y45y4.

6y4−y−8y−(−3y4)6y4-y-8y-(-3y4)

Multiply −3-3 by −1-1.

6y4−y−8y+3y46y4-y-8y+3y4

Simplify by adding terms.

Add 6y46y4 and 3y43y4.

9y4−y−8y9y4-y-8y

Subtract 8y8y from −y-y.

9y⁴−9y