Toán Lớp 8: (8x^2-50y^2):(2x+5y)
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Toán Lớp 8: (8x^2-50y^2):(2x+5y)
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Comments ( 2 )
=(8x^2+20xy-20xy-50y^2)/(2x+5y)
=(4x(2x+5y)-10y(2x+5y))/(2x+5y)
=((4x-10y)(2x+5y))/(2x+5y)
=4x-10y