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OpenStudy (anonymous):
explain how to factor the trinomial x2-18x-40 and state the factors
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OpenStudy (johnweldon1993):
\[\large Ax^2 + Bx + C\] We want 2 numbers that multiply to = C And at the same time...add to = B So we can set up 2 equations x * y = -40 x + y = -18 What are the 2 numbers?
OpenStudy (johnweldon1993):
Hint...what are the factors of 40?
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