(2y+1)(3y-1)+(2-y)(6y-1)
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(2y+1)(3y-1)+(2-y)(6y-1)(2y+1)(3y-1)+(2-y)(6y-1)(2y+1)(3y-1)+(2-y)(6y-1)(2y+1)(3y-1)+(2-y)(6y-1)=6y^
(2y+1)(3y-1)+(2-y)(6y-1)
(2y+1)(3y-1)+(2-y)(6y-1)
(2y+1)(3y-1)+(2-y)(6y-1)
(2y+1)(3y-1)+(2-y)(6y-1)
=6y^2+y-1-6y^2+13y-2
=14y-3
y (3y^2+8y-3)-6y(3y+2y-1)+9y
通分 y+3/y*y-6y+9,1/2y+6,y-1/y*y-9
(2y+1)(3y-1)+(2-y)(6y-1)
(y+1)分之(2y+3)=(3y+4)分之(6y+7)
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(y-1)等于2(y-1)
3Y-2=Y+1+6Y
3y+2=y-1+6y 不要分数
(4-y)^2-4(1-y)(3+6y)
3y+2=1+6y
3y+2=1+6y
计算:[(y+1)/(y^2-4y+3)减去(y-2)/(y^2-6y+9)]除以(y-5)/(y-1)
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)
(y-2)(y^2-6y-9)-y(y^2-2y-15),其中y=1/2.先化简再求值.
计算:3y(y-4)(2y+1)-(2y-3)(4y²+6y-9)
3(Y+1)^2-5(Y+1)(Y-1)+2(Y-1)^2,化简