The polynomial is a difference of perfect squares. Use the formula a2 – b2 = (a + b)(a – b) to factor completely. 81x2 – 49 The
value of a is . The value of b is . The product of the prime factors is .
2 answers:
<span>81x2</span> as <span><span>(9x)</span>2</span>.<span><span><span>(9x)</span>2</span>−49
</span>Make 49 as 72.<span><span><span>(9x)</span>2</span><span>−72</span></span>
<span><span>a2<span>−b2</span></span>=<span><span>(a+b)</span><span>(<span>a−b</span>)</span></span></span>
when <span>a=9x</span> and b=7.<span><span>(<span>9x+7</span>)</span><span>(<span>9x−7</span>)</span></span>
Answer: (Like pretty much all of my other answers, this is late, but for anyone else that needs it.)
The value of a is 9x
The value of b is 7
The product of the prime factors is (9x-7)(9x+7)
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