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OpenStudy (anonymous):
two numbers that when added equal 19, and multiplied equals -20
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OpenStudy (unklerhaukus):
a+b = 19 ab = -20
OpenStudy (unklerhaukus):
solve the first equation for a (by taking away b from both sides)
OpenStudy (unklerhaukus):
once you have a (in-terms of b) sub into the second equation
OpenStudy (anonymous):
so pretty much guess and check?
OpenStudy (unklerhaukus):
no
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