2(2Y/3)-Y+3(4Y/3)=26

(y^2)^4y-(-2y)^3y^6= 数学题=y(y+3)-4(y+3)2=(y+3)(y-4y-12) (3y+2)(y-4)-3(y-2)(y-3) (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 2y+5/3y-6-y/2=5y-4/2y-4 解分式方程（y+3)/(y^2+y)-1/(1-y)=4/y要过程 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^(4)+2y'''+3y''=0通解 5(y-2)-7(y+3)=11(y+4) （2y-3)(-y+4)=(y-2)(y-5)-3y(y-7/3)解方程 (x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)= 3(y-2)=4y-5 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! 先化简,再求值：(y-2)(2y²-3y+9)-y(y²-2y+15),其中Y²－4Y-4=0.