2[4/3y-(2/3y-1/2)]=3/4y

(y^2)^4y-(-2y)^3y^6= (y-4)(3y+2)-(3y-7)(2y+1),其中y=4/3 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 数学题=y(y+3)-4(y+3)2=(y+3)(y-4y-12) 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 4y的平方-3y-1=y-2 y (3y^2+8y-3)-6y(3y+2y-1)+9y y-1/y-2 - y-3/y-4=y-2/y-3 - y-4/y-5一共有四个分数哦~希望可以快一点~谢谢! 常微分方程的通解dy/dx=(x-y+1)/(x+y-3)y^4=2y^n+y=0y''+6y'+9y=e^(-3x)y''+y'-2y=4e^(2x) (3y+2)(y-4)-3(y-2)(y-3) 4y²-4y/y²-2y+1÷(y+1/y-1-y-1/y+1)÷(3y+3) 2y+5/3y-6-y/2=5y-4/2y-4 解方程3y^2-(2y+1)(y-2)=(y-5)(y-1) 解方程：3y^2-(2y+1)(y-1)=(y-5)(y+1) 解方程：3y²-(2y+1)(y-2)=(y-5)(y+1)