Find the indicated product. (3 x + 1)(3 x $-$ 1) A) 9 x 2 $-$ 1 B) 9 x 2 + 3 x $-$ 1 C) 9 x ² + 3 x D) 9 x 2 $-$ 3 x $-$ 1

Name: Find the indicated product. (3 x + 1)(3 x $-$ 1) A) 9 x 2 $-$ 1 B) 9 x 2 + 3 x $-$ 1 C) 9 x 2 + 3 x D) 9 x 2 $-$ 3 x $-$ 1
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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, $a = 3x$ and $b = 1$, so the product is $(3x)^2 - 1^2 = 9x^2 - 1$.

Find the Indicated Product −-− 1) A) 9 X 2 −-− 1 B) 9 X 2 + 3 X

Find the Indicated Product $-$ 1)
A) 9 X 2 $-$ 1
B) 9 X 2 + 3 X