(1).3x+2y-6y-x?(2).7x+(3x-5x)?(3).1/2(6-4x)-1/3(3-6x)?
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
求函数y=\x-1\+\x-2\+\x-3\+\x-4\+\x-5\+\x-6\+.+\x-10\的最小值
(2X-Y)-2(3X-1/2Y) 6(X/3+X-1/2) (X-3)-(5X+7) -4X-(-(3/1X)+(-1
1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y)
因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)(
因式分解3x^2(x-y)+6x(y-x)
x^8-x^7y+x^6y^2-x^5y^3+x^4y^4-x^3y^5+x^2y^-xy^7+y^8
化简 (x+y)(x²-xy+y²) ; 3(2x-1)(x+6)-5(x-3)(x+6)
计算:(2/3x√9x+6x√y/x)+(y√x/y-√1/x)