化简：2x(2x-3y)-3y(x+y)

来源：学生作业帮助网 编辑：六六作业网 时间：2025/01/14 22:46:51
化简：2x(2x-3y)-3y(x+y)化简：2x(2x-3y)-3y(x+y)化简：2x(2x-3y)-3y(x+y)2x(2x-3y)-3y(x+y)=4x²-6xy-3xy-3y

化简：2x(2x-3y)-3y(x+y)
化简：2x(2x-3y)-3y(x+y)

化简：2x(2x-3y)-3y(x+y)
2x(2x-3y)-3y(x+y)
=4x²-6xy-3xy-3y²
=4x²-9xy-3y²


原式
=4x²-6xy-3xy-3y²
=4x²-9xy-3y²

x=1.25,y=-0.25
所以x+y=1
1/7(-2x+3y)(-2x-3y)-10(x+y)^2
=1/7[(-2x)^2-(3y)^2]-10*1^2
=1/7(4x^2-9y^2)-10
=1/7[4*(5/4)^2-9*(-1/4)^2]-10
=1/7(25/4-9/16)-10
=(1/7)*(91/16)-10
=13/16-10
=-147/16
希望对你能有所帮助。

化简：{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x 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 化简:5(x-y)+2(x+y)-3(x-y) 化简3(x-y)-7(x--y)+2(y-x) (x+y)-(x-y)^3÷(x-y)(x+y)×2y化简e , 化简(X-2Y)-(Y-3X) x(x-y)2-(y-x)3 [2/3x-2/x+y(x+y/3x-x-y)]/x-y/x 计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x 化简y(x+y)+(x+y)(x-y)-x^2 [(3x+y)(x-y)-(2x+3y)(x-y)]*(x-y) 计算：x+2y/x-y+2x/y-x-3y/x-y 化简(x-3y)(3x+y)-(2x-3y)(2x-3y) (2x+3y)(3x-2y)-(x-2y)(x+2y)化简 化简 [(x-y)^2(x+y)^-2/2(x+y)^2(x-y)^-2]^-3 化简：[(x+2y)^2-(x+y)(3x-y)-5y^2]/2x (2x+3y)(x-2y)-(y+2x)(2x-y) 化简