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OpenStudy (anonymous):
For what values of k is x^2 + kx + 49/4 a perfect square trinomial?
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OpenStudy (anonymous):
the answer is 7, -7 but why?
OpenStudy (anonymous):
49/4 can be written as (7/2)^2
OpenStudy (anonymous):
ohhh....
OpenStudy (anonymous):
so......if u write (x+7/2)(x+7/2) which is equal tois x^2 + kx + 49/4
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