(3x^2y^4+(-2xy^2)^2)/(-3x^2y^3) 怎么做? 过程详细点

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(3x^2y^4+(-2xy^2)^2)/(-3x^2y^3)怎么做?过程详细点(3x^2y^4+(-2xy^2)^2)/(-3x^2y^3)怎么做?过程详细点(3x^2y^4+(-2xy^2)^2)

(3x^2y^4+(-2xy^2)^2)/(-3x^2y^3) 怎么做? 过程详细点
(3x^2y^4+(-2xy^2)^2)/(-3x^2y^3) 怎么做? 过程详细点

(3x^2y^4+(-2xy^2)^2)/(-3x^2y^3) 怎么做? 过程详细点
原式=(3x^2y^4+4x^2y^4)/(-3x^2y^3)
=7x^2y^4/(-3x^2y^3)
=-7y/3

(x)=2a(1-cos2x)/2-√3asin2x+a+b
=-acos2x-√3asin2x+2a+b
=-2asin(2x+π/6)+2a+b
π/6<=2x+π/6<=7π/6
所以-1/2<=sin(2x+π/6)<=1
a>0,-2a<0
则最大=-2a*(-1/2)+2a+b=3a+b=1
最小=-2a*1+2a+b=-5
a=2,b=-5
a<0,-2a>0
则最大=-2a*1+2a+b=1
最小=3a+b=-5
a=-2,b=1
a=2,b=-5

因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) 化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy] xy-2{xy-[3x^2y-(4xy^2+0.5xy)]+4x^2y}+6xy^2 （X-3xy+4xy-y）-[-2x-2（xy-3/2xy）-y]+6xy的过程 （-3x^y+2xy)-( )=4x^+xy 因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6 x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2 5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2) 3(x^2y+xy)-4(xy-2x^2y)-(-xy) 当x-y=2xy时,求4x-3xy-4y/xy XY(XY+3)+(XY+4)+4(X+Y+1)-(X+Y+2) 3（x平方y+xy)-4(xy-2x平方y)-(xy) 2x²y-3(2xy-xy)-xy 化简2(x²y+xy)-3(x²y-xy)-4x²y (x^2+2xy+y^2-4xy)*(x^2-2xy+y^2+4xy) 一道数学题(3x^2y-4xy^2)/xy 化简：2x²y+{2xy-[3x²y-2(-3x²y+2xy)]-4xy}化简：2x²y+{2xy-[3x²y-2(-3x²y+2xy)]-4xy} 计算：5xy^2-[3xy^2-(4xy^2-2x^2y)]+2x^2y-xy^2