(2x+3y+2)(2x-3y+6)
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(2x+3y+2)(2x-3y+6)
(2x+3y+2)(2x-3y+6)
(2x+3y+2)(2x-3y+6)
(2x+3y+2)(2x-3y+6)
=[(2x+4)+(3y-2)]*[(2x+3)-(3y-2)]
=(2x+4)^2-(3y-2)^2
=(4x^2+16x+16)-(9y^2-12y+4)
=4x^2-9y^2+16x+12y+12
(2x+3y+2)(2x-3y+6)
=4x^2-6xy+12x+6xy-9y^2+18y+4x-6y+12
=4x^2-9y^2+16x+12y+12
[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
x(x-y)2-(y-x)3
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?
因式分解3x^2(x-y)+6x(y-x)
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
[2/3x-2/x+y(x+y/3x-x-y)]/x-y/x
化简:{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3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x
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
[(3x+y)(x-y)-(2x+3y)(x-y)]*(x-y)
2(2x+3y)(3x+2y)-(6x-y)(2x-5y)
x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2
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