SOLUTION: what can i multiply to get 38 and add to get -21?

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Question 1051305: what can i multiply to get 38 and add to get -21?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
what can i multiply to get 38 and add to get -21?
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x + y = -21
x*y = 38
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Substitute for "x" and solve for "y"::
(-21-y)y = 38
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y^2 +21y + 38 = 0
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(y+2)(y+19) = 0
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If y = -2 ; x = -19
If y = -19 ; x = -2
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Cheers,
Stan H.