(2x+y)(2x-3y)+x(2x-3y) (b-a)的2次方+2a(b-a)-(a-b) -3a的n-1方+6a的n次方-12a的n+1方
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(2x+y)(2x-3y)+x(2x-3y)(b-a)的2次方+2a(b-a)-(a-b)-3a的n-1方+6a的n次方-12a的n+1方(2x+y)(2x-3y)+x(2x-3y)(b-a)的2次方
(2x+y)(2x-3y)+x(2x-3y) (b-a)的2次方+2a(b-a)-(a-b) -3a的n-1方+6a的n次方-12a的n+1方
(2x+y)(2x-3y)+x(2x-3y) (b-a)的2次方+2a(b-a)-(a-b) -3a的n-1方+6a的n次方-12a的n+1方
(2x+y)(2x-3y)+x(2x-3y) (b-a)的2次方+2a(b-a)-(a-b) -3a的n-1方+6a的n次方-12a的n+1方
(2x+y)(2x-3y)+x(2x-3y)
= (2x-3y)(2x+y+x)
= (2x-3y)(3x+y)
(b-a)的2次方+2a(b-a)-(a-b)
= (a-b)的2次方-2a(a-b)-(a-b)
= (a-b){a-b-2a-1)
= -(a-b)(a+b+1)
-3a的n-1方+6a的n次方-12a的n+1方
= -3a的(n-1)方(1-2a+a方)
= -3a的(n-1)方(a-1)方
x(x-y)2-(y-x)3
[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)
因式分解3x^2(x-y)+6x(y-x)
2X(2X-3Y)-3Y(X+Y)
(-2x y)^2-(3y-x)(-x-3y)
(x+2y)^2-(x+y)(3x-y)
计算(x+y)(x+y)^2(-x-y)^3
化简:5(x-y)+2(x+y)-3(x-y)
3x(x-y)+2y(x-y) 计算
化简3(x-y)-7(x--y)+2(y-x)
因式分解:3x(x-y)+2y(y-x)
(x-y)^3×(x-y)^2×(y-x)