Multiply.
-$\left(5 n^{4}+4\right)\left(5 n^{4}\right.$ - 4)
A) $25 n^{8}-20 n^{4}-16$
B) $5 n^{8}-16$
C) $25 n^{8}+16$
D) $25 n^{8}-16$

Name: Multiply. -$\left(5 n^{4}+4\right)\left(5 n^{4}\right.$ - 4) A) $25 n^{8}-20 n^{4}-16$ B) $5 n^{8}-16$ C) $25 n^{8}+16$ D) $25 n^{8}-16$
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Question

Quizplus · Accepted Answer

The correct answer is obtained by multiplying the two binomials: $ (5n^4 + 4)(5n^4 - 4) $. This is a difference of squares formula, $a^2 - b^2 = (a + b)(a - b)$, where $a = 5n^4$ and $b = 4$. Thus, the product is $25n^8 - 16$.

Multiply - (5n4+4)(5n4\left(5 n^{4}+4\right)\left(5 n^{4}\right.(5n4+4)(5n4 - 4) A) 25n8−20n4−1625 n^{8}-20 n^{4}-1625n8−20n4−16 B) 5n8−165 n^{8}-165n8−16

Multiply
- $\left(5 n^{4}+4\right)\left(5 n^{4}\right.$ - 4)
A) $25 n^{8}-20 n^{4}-16$ B) $5 n^{8}-16$