what numbers add up to 20 and multiply too -105

yea help  me im so stuck
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1 Answer

x+y=20...so y=20-x

xy=-105

x*(20-x)=-105

-x^2 +20x +105=0

or x^2 -20x -105=0

(x-24.3178211)(x+4.3178211)=0

maebee x=-4.3178211 & y=+24.3178211
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