Expand and combine like terms.
(8-n^7)(8+n^7)

-7(n+3)-8(1+8n)

Simplifying

-7(n + 3) + -8(1 + 8n)

Reorder the terms:

-7(3 + n) + -8(1 + 8n)

(3 * -7 + n * -7) + -8(1 + 8n)

(-21 + -7n) + -8(1 + 8n)

-21 + -7n + (1 * -8 + 8n * -8)

-21 + -7n + (-8 + -64n)

Reorder the terms:

-21 + -8 + -7n + -64n

Combine like terms: -21 + -8 = -29

-29 + -7n + -64n

Combine like terms: -7n + -64n = -71n

-29 + -71n

Step-by-step explanation:

the answer is c

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step-by-step explanation: