Please help! 4x(5y-x)-5y(4x-y)

asked Jun 6, 2019 214k views

4 votes

Please help!
4x(5y-x)-5y(4x-y)

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3 votes

= 4x(5y-x) - 5y(4x-y)
= 20xy-4x²- 20xy+5y²
= -4x²+5y²

Nico Andrade answered Jun 9, 2019

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3 votes

4x(5y-x)-5y(4x-y)=20xy-4x^2-20yx+5y^2=-4x^2+5y^2=5y^2-4x^2

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