how to solve x*y=300 2x+2y=70

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how to solve x*y=300 2x+2y=70

Guest Nov 28, 2015

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how to solve x*y=300 2x+2y=70

X+y=35

X=35-y

y(35-y)=300

-y^2+35y=300

Y^2-35y+300=0

(Y-15)(y-20)=0

Y=15, x=20

or

y=20, x=15

Melody Nov 28, 2015

1⁺⁰ Answers

+118724

+10

Best Answer

how to solve x*y=300 2x+2y=70

X+y=35

X=35-y

y(35-y)=300

-y^2+35y=300

Y^2-35y+300=0

(Y-15)(y-20)=0

Y=15, x=20

or

y=20, x=15

Melody Nov 28, 2015

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