(2y+1)^2=6y+3
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(2y+1)^2=6y+3
(2y+1)^2=6y+3
(2y+1)^2=6y+3
y (3y^2+8y-3)-6y(3y+2y-1)+9y
(y+1)分之(2y+3)=(3y+4)分之(6y+7)
(y^2)^4y-(-2y)^3y^6=
3Y-2=Y+1+6Y
3y+2=y-1+6y 不要分数
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
3y+2=1+6y
3y+2=1+6y
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)
解方程:(y-3y+2)(y+3y-2)=y(y+3)(y-3)
(y-2)(y^2-6y-9)-y(y^2-2y-15),其中y=1/2.先化简再求值.
4y(y-1)=3 3y^2+2√6y=-2
(2y+1)(3y-1)+(2-y)(6y-1)
(2y+1)^2=6y+3
方程5y(2y-3)=(y+2)(y-2)-1