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OpenStudy (keana):
Which polynomial is a perfect square trinomial? a: 4x2 - 6x + 9 b:4a2 - 28a - 49 c:36x2 - 18x - 9 d:25b2 - 40b + 16
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OpenStudy (anonymous):
d:25b2 - 40b + 16
OpenStudy (anonymous):
One that can be factored completely, now try each and tell me what you get.
OpenStudy (apoorvk):
factorise and check which of the above options fits into this form:\[ (a \pm b)^2\]
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