Find the product.
-$$( n - 9 ) ( n + 9 )$$
A) $n ^ { 2 } - 18$
B) $n ^ { 2 } - 81$
C) $n ^ { 2 } - 18 n - 81$
D) $n ^ { 2 } - 18 n + 81$

Name: Find the product. -\[( n - 9 ) ( n + 9 )\] A) $n ^ { 2 } - 18$ B) $n ^ { 2 } - 81$ C) $n ^ { 2 } - 18 n - 81$ D) $n ^ { 2 } - 18 n + 81$
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Question

Quizplus · Accepted Answer

This is an application of the difference of squares formula, $a^2 - b^2 = (a - b)(a + b)$. Here, $a = n$ and $b = 9$, so the product is $n^2 - 9^2 = n^2 - 81$.

Find the Product (n−9)(n+9)( n - 9 ) ( n + 9 )(n−9)(n+9)

Find the Product $( n - 9 ) ( n + 9 )$