2x^3-16y^35x^2-13xy-6y^2x^3+2x^2-10x-20-3x^3-12x^2+36x9-x^2+12^xy-36y^29s(s-1)-2t(6s-2t-3)6(m-n)^2-10m+10n-4-3y^4+10y^+83x^2y+28y^2+7xy^2+12xy
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因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y)
x^+2xy+y^+4=16 x^-2xy+y^=16 求(3xy+6y^)+|x^-(2xy+2y^-3x^)|的值
(x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)答案应为-2x-x*x-3x,
2x²y-3(2xy-xy)-xy
因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6
化简:3x^2-[5xy-(x^y-3xy)+4x^2y-8xy]
计算:3xy[2xy-x(y-2)+x]
计算3xy[2xy-x(y-2)+x-1]
(-3x^y+2xy)-( )=4x^+xy
-xy^2(x+y)^3+x(x+y)^2因式分解
(x+3y)/(x^2+xy)-x+y计算题
X^Y-2XY^2+y^3
x*x+xy=3,xy+y*y=2,则x*x+2xy+y*y=________?
X×X-2XY-Y×Y+2X-2Y+2=02X×2X-4XY-2Y×2Y+3X-3Y+4=0X×X+2XY+Y×Y+X+Y-56=0X×X-2XY+Y×Y-X+Y-12=0X×X-3XY+Y×Y=-13X×3X-XY+3Y×3Y=13 两个在一起的方程之间有所联系(要求一步一步写出来)
(12x^2y-8xy^2+16xy)/-3x+2y-4=?
(12x^2y-8xy^2+16xy)/-3x+2y-4=?
(x^2+xy/x-y)/(xy/x-y)计算
1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y)