(-2y)^6-(-5 y^3)^2 [(-3y)^2]^3

y (3y^2+8y-3)-6y(3y+2y-1)+9y 2y+5/3y-6-y/2=5y-4/2y-4 [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 (y^2)^4y-(-2y)^3y^6= 计算：[(y+1)/(y^2-4y+3)减去(y-2)/(y^2-6y+9)]除以(y-5)/(y-1) 通分 y+3/y*y-6y+9,1/2y+6,y-1/y*y-9 y(y-2)²-y(y+3)(y-5) y=1/2 化简求值 y(y-2)²-y(y+3)(y-5) y=1/2 化简求值 y(y-2)²-y(y+3)(y-5) y=1/2 化简求值 2(2x+3y)(3x+2y)-(6x-y)(2x-5y) 解3y+5/3y-6=1/2+5y-4/2y-4 x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2 4x-2y-6y*-y-3x+5y* *=2 就是平方 4y（3y-2）-2y（6y+5）＞8解不等式 计算（3y-1)(2y+3)-(6y-5)(y-4) （3y-1)(2y-3)+(6y-5)(y-4)=?xie (3y－1)(2y一3)十(6y一5)(y一4) （3y-1)(2y-3)+(6y+5)(y-4)=?