化简:2x(3x-y)-(2x+3y)(2x-3y)
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化简:2x(3x-y)-(2x+3y)(2x-3y)化简:2x(3x-y)-(2x+3y)(2x-3y)化简:2x(3x-y)-(2x+3y)(2x-3y)原式=6x^2-2xy-4x^2+9y^2=
化简:2x(3x-y)-(2x+3y)(2x-3y)
化简:2x(3x-y)-(2x+3y)(2x-3y)
化简:2x(3x-y)-(2x+3y)(2x-3y)
原式=6x^2-2xy-4x^2+9y^2
=2x^2-2xy+9y^2
2x(3x-y)-(2x+3y)(2x-3y)
=6x²-2xy-4x²+9y²
=2x²-2xy+9y²
6x2-2xy-4x2+9y2=2x2-2xy+9y2
2(x-y)²-3(x-y)(-y-x)
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化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x
化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方
(y-x)^4(x-y)^3+2(x-y)^6(y-x)
(x-y)^3×(y-x)^4+(x-y)^2×(y-x)^5
12(x+y)^3(y-x)/【4(x+y)^2(x-y)】
计算(x-y)^2×(x-y)^3×(y-x)×(y-x)^2
(x+y)/2- x-y/2=6 3(x+y)=4(x-y)
2分之x+y+3分之x-y;4(x+y)-(x-y)谢谢了,
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3x+y=2 -y/x+y=123x+y=2 (-y/x)+y=12