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OpenStudy (anonymous):
what value of b makes the polynomial below a perfect square ? X^2+bx+49 b=
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OpenStudy (anonymous):
49 is 7 squared. 2 times 7 is 14
OpenStudy (anonymous):
so the perfect square would be \(x^2+14x+49\) and it is a perfect square because it is \[(x+7)^2\] which you can check by multiplication
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