(x+3y)^2+(2x+6y)(3y-4x)+(4x-3y)^2
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(x+3y)^2+(2x+6y)(3y-4x)+(4x-3y)^2
(x+3y)^2+(2x+6y)(3y-4x)+(4x-3y)^2
(x+3y)^2+(2x+6y)(3y-4x)+(4x-3y)^2
(x+3y)^2+(2x+6y)(3y-4x)+(4x-3y)^2
=(x+3y)^2-2(x+3y)(4x-3y)+(4x-3y)^2
=[(x+3y)-(4x-3y)]^2
=9x^2-36xy+36y^2
)(x+3y)2+(2x+6y)(3y-4x)+(4x-3y)2,
(x+3y)^2+(2x+6y)(3y-4x)+(4x-3y)^2
=[(x+3y)-(4x-3y)]^2
=(6y-3x)^2
=9(2y-x)^2
[2(x-y)^5-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2
3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-xy*y+y*y*y等于多少?
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
x(x-y)2-(y-x)3
[(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)(x+y)-(x-2y)(x+2y)-(x-y)平方
2(2x+3y)(3x+2y)-(6x-y)(2x-5y)
因式分解3x^2(x-y)+6x(y-x)
x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2
x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20
{(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20
4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6
[12(x+y)^3+3(x+y)(x-y)^2]÷6(x+y)
4x-3y/x-2y÷6y-8x/y-2x
3(x-y)^2-7(x-y)+8(y-x)^2+6(y-x)合并同类项.
(x+y)/2- x-y/2=6 3(x+y)=4(x-y)
x+y/3+x-y/2=6 4(x+y)-2(x-y)=40