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How to factor 7x^2+27xy-4y^2

Guest Jul 23, 2020

1⁺⁰ Answers

+118703

+1

7x^2+27xy-4y^2

7*-4=-28

I need to numbers that add to 27 and mult to -28

They are 28 and -1

$7x^2+28xy-1xy-4y^2\\ =7x(x+4y)-y(x+4y)\\ =(7x-y)(x+4y)$

Melody Jul 23, 2020

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