3(x-2y)(x+2y)-9(2y-x)^2分解因式

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3(x-2y)(x+2y)-9(2y-x)^2分解因式

3(x-2y)(x+2y)-9(2y-x)^2分解因式
3(x-2y)(x+2y)-9(2y-x)^2
分解因式

3(x-2y)(x+2y)-9(2y-x)^2分解因式
3(x-2y)(x+2y)-9(2y-x)^2
=(x-2y)(3x+6y)-(x-2y)(9x-18y)
=(x-2y)(3x+6y-9x+18y)
=(x-2y)(24y-6x)
=6(x-2y)(4y-x)

原式=3(x-2y)(x+2y)-9(x-2y)^2
=3(x-2y)(x+2y-9x+18y)
=3(x-2y)(-8x+20y)
=-12(x-2y)(2x-5y)

原式 = 3(x-2y) [(x+2y) - 3(x-2y)]
= 3(x-2y) [-2x +4y]
= -6(x-2y)^2

结果是6（x－2y）（4y－x）

x(x-y)2-(y-x)3 x-y/x-x+y/y-(x+y)(x-y)/y² y/x=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 化简y(x+y)+(x+y)(x-y)-x^2 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) 3(x+y)-2(x-y)=11 4(x+y)+3(x-y)=9 (x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2 4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11 81/8*(-x-y)^6*(x-y)^3*4/9(x+y)^4*(y-x)^2 计算(x-y)^7÷(y-x)^6+9-x-y)^3÷(x+y)^2 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) 因式分解x(x+y)(x-y)-x(x+y)^2 2X(2X-3Y)-3Y(X+Y)