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OpenStudy (anonymous):
Determine whether the polynomial is a perfect square and if it is, factor it. n2 – 9n + 9 A. is a perfect square: (n – 3)2 B. is a perfect square: (n – 9)2 C. is a perfect square: (n + 3)2 D. is not a perfect square
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OpenStudy (anonymous):
A perfect square is a number that is the product of two equal integers
OpenStudy (anonymous):
Since you can't factor it, this is not a perfect square
OpenStudy (tkhunny):
\(b^{2} - 4ac = (-9)^{2} - 4(1)(9) = 9(9 - 4) = 45 \ne 0\) If you don't get zero (0), it's not a perfect square.
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