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Anonymous
m2+m-90 = (m-9)(m+10) when factored
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No.
(m + 9)(m + 9)
That depends on the value you give to 'm'.
m2 + 4-1/2 m2 + 1 / 4+1/2 m2 + 1 / (square root of 4) m2 + 1/2