(y^2+2y)^2+2(y^2+2y)+1 因式分解(y^2+2y)^2+2(y^2+2y)+1因式分解
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(y^2+2y)^2+2(y^2+2y)+1因式分解(y^2+2y)^2+2(y^2+2y)+1因式分解(y^2+2y)^2+2(y^2+2y)+1因式分解(y^2+2y)^2+2(y^2+2y)+1
(y^2+2y)^2+2(y^2+2y)+1 因式分解(y^2+2y)^2+2(y^2+2y)+1因式分解
(y^2+2y)^2+2(y^2+2y)+1 因式分解
(y^2+2y)^2+2(y^2+2y)+1
因式分解
(y^2+2y)^2+2(y^2+2y)+1 因式分解(y^2+2y)^2+2(y^2+2y)+1因式分解
=(y^2+2y+1)^2
=(y+1)^4
两次应用完全平方公式.
=(Y^2+2Y+1)^2
=(y+1)^4
解(y-3分之2y+y+3分之y)×y分之y²-9
y²+y-2
解方程:(y-3y+2)(y+3y-2)=y(y+3)(y-3)
(x-y)(x-y)2(y-x) (x+2y-?)(x-2y+?)
[(x+2y)²-(x+y)(x-y)-7y²】÷(2y)
{(x²+y²)-(x-y)+2y(x-y)}/4y
对于(y一撇)y`=y/x(y-1)求导,我求的结果是y``=-y^2-y`x+y/x^2(y-1)^2 怎么不对啊,我的求导过程是:y`x(y-1) - [x(y-1)]` y y`xy-y`x-(y-1+xy`)y -y^2-y`x+yy``=-------------------------=----------------------=-----------------x^2 (y-1
y (3y^2+8y-3)-6y(3y+2y-1)+9y
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
(y+4)²-(y-2)(y-3)
3y(y-1)等于2(y-1)
化简 x-y+(2y²)/(x+y)
(x-2y)(x+y)+(x+y)计算
yy''-(y')^2=y^2y'
yy''-(y')^2=y^2y'
y+y'-2y=2x
计算:(x-y)^2-(x+y)(x-y)
计算y²(1/2y-y²)