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OpenStudy (anonymous):
how to complete y^2+15y+56=(y+7)(y=?
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OpenStudy (anonymous):
7 times what is 56
OpenStudy (anonymous):
8
OpenStudy (anonymous):
right (y+7) (y+8) if you add 7 and 8 you should get 15 which is middle term
OpenStudy (anonymous):
lol duhh that was easy so what about this one ? z^2+9z=90=(z-6)(z
OpenStudy (anonymous):
\[-6*?=-90\]
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