(-2y^3)^2+(-4y^2)^3-[(-2y)^2*(-3y^2)^2]

(3y+2)(y-4)-3(y-2)(y-3) (y^2)^4y-(-2y)^3y^6= 数学题=y(y+3)-4(y+3)2=(y+3)(y-4y-12) y (3y^2+8y-3)-6y(3y+2y-1)+9y 6y-(y+2分之y+2-y分之y)÷(y^3-4y-2y^2+8分之y) 怎么算 4y²-4y/y²-2y+1÷(y+1/y-1-y-1/y+1)÷(3y+3) (y-4)(3y+2)-(3y-7)(2y+1),其中y=4/3 2y+5/3y-6-y/2=5y-4/2y-4 2(y-4)(3y+2)-5(-3y+7)(y+1),其中y=-1 解分式方程（y+3)/(y^2+y)-1/(1-y)=4/y要过程 因式分解 y^3-4y+4y^2 (4-y)^2-4(1-y)(3+6y) 4y的平方-3y-1=y-2 （y+4）²-（y-2）（y-3） y^(4)+2y'''+3y''=0通解 5(y-2)-7(y+3)=11(y+4) [(-3-y)-y]^2怎麼算, 通分 y+3/y*y-6y+9,1/2y+6,y-1/y*y-9