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OpenStudy (anonymous):
How do I do this problem... Which value of b would make 16x^2-bx+25 a perfect square trinomial?
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OpenStudy (anonymous):
must be \((4x+5)^2=16x^2+40x+25\) so \(b=40\)
OpenStudy (anonymous):
ooops i ignored the minus sign must be \(16x^2-40x+25\) so \(b=-40\)
OpenStudy (anonymous):
Okay thank you! I think I get the concept!
OpenStudy (anonymous):
yw
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