x=3/2 y=-2 化简x-2(1/4x-1/3y²)+(-3/2x+1/3y²),在求职
3个回答
x=3/2 y=-2 化简x-2(1/4x-1/3y²)+(-3/2x+1/3y²)
=x-1/2x+2/3y²-3/2x+1/3y²
=-x+y²
=-3/2+(-2)²
=-3/2+4
=5/2
相关问题
先化简再求职:3xy+3x^2+2y-3xy-2x^2其中x=-2 y=1
化简:2(x+y)-2/3(x-y)+1/4(x+y)+2/3(x-y)
化简(1/2X+1/3Y+1/4)(2X+3Y+4)
化简并求职:(2x^2/y-2xy^2)-((-3x^3y^2+3x^2y)+(3x^2*y^2-3xy^2)).其中x
化简x+y/x1/3+y1/3-x4/3-y4/3/x3/2-y3/2的结果是
1/3x-[1/2y-3(x-1/2y)]化简
化简(x+y)+(2x+1/2y)+(3x+2/3y)+(4x+3/4y)+...+(9x+8/9y)=?
化简求值:3(x-y)-1/2(x+y)+3/4(x-y)²+3/2(x+y),其中x+y=2,x+y=-3.
化简(2x-3y)(3x-2y+1)
化简求值:x=2,y=1,求1/3(2x-3y)+1/2(2x-3y)-1/6(2x-3y)-5/3(2x-3y)