化简求值:[(x+y)(x-2y)-(x+2y)ˆ2]÷1/2y,其中想x=-1,y=1/4
来源:学生作业帮助网 编辑:六六作业网 时间:2024/08/27 08:58:38
化简求值:[(x+y)(x-2y)-(x+2y)ˆ2]÷1/2y,其中想x=-1,y=1/4化简求值:[(x+y)(x-2y)-(x+2y)ˆ2]÷1/2y,其中想x=-1,y=1
化简求值:[(x+y)(x-2y)-(x+2y)ˆ2]÷1/2y,其中想x=-1,y=1/4
化简求值:[(x+y)(x-2y)-(x+2y)ˆ2]÷1/2y,其中想x=-1,y=1/4
化简求值:[(x+y)(x-2y)-(x+2y)ˆ2]÷1/2y,其中想x=-1,y=1/4
:[(x+y)(x-2y)-(x+2y)ˆ2]÷1/2y
=(x²-xy-2y²-x²-4xy-4y²)÷y/2
=(-5xy-6y²)÷y/2
=-10x-12y
当x=-1,y=1/4时
原式=-10-3=-13
化简求值(3x+2y-1)(3x-2y+1)-(x+y)(x-y)
化简求值:【(x+Y)(X-Y)-(X-Y)的平方+2Y(2-Y)】除4Y,其中X=1 Y=2
化简并求值“2(x+y)-2/3(x-y)-3(x+y)+2/3(x-y),其中x=12,y-1
化简求值(x+5y)(x+4y)-(x-y)(x+y),其中x=一又2/5,y=-1/7
化简求值:已知【3x分之2-x+y分之2(3x分之x+y-x-y)】÷5x+3y=0
因式分解(x^2+1)×(3x-2)+(2x-3)(1+x^2) 化简求值[2x^2+(x+y)(x-y)]×[(x+y)^2+(x-y)^2] x=2 y=-1/2
化简求值:x-{y-2x+[3x-2(2x+y)+5y]},其中x=-1,y=2
[(2X-Y)²-Y(4X+Y)-8X]÷2X其中X=-1,Y=2化简求值
化简求值:(1/3x-y)(-1/3x-y)+1/3x(1/3x-y),其中x=2,Y=3
化简求值:[(x+y)²-(x+y)(x+3y)-5y²,其中x=-2,y=1/2
化简求值8x的平方-5x(4y-x)+4x ×(-4x+5/2y)x=1 y=3
化简求值:[2x²-(x+y)(x-y)][(2-x)(x+2)+(-y-2)(2-y)]其中x=-1,y=½
化简求值:(2x²-y)(2x²+y)-(2y+x²)(2y-x²)其中,x=-1,y=-2.化简求值:(2x²-y)(2x²+y)-(2y+x²)(2y-x²)其中,x=-1,y=-2.
先化简,再求值:(3/2x)-(1/x+y) X[(x+y/2x)-x-y],其中x=2010,y=2011
1.(-2a)³·b²÷(8a³b²) 2.-5x(2x²-3x+4)+4x³+15x3.(x²-2y²)(x+2y)-2xy(x-y)4.(x-y+z)(x-y-z)化简求值 [(x+y)(x-y)-(x+y)²-2y(x-2y)]÷(-2y),其中x=5,y=2003
化简求值:【(4X-3y/2)(4X+3y/2)4XY-Y/4(16X-9Y)】*8X
化简求值【(x-2y)^2-x(x-4y)-8xy】/4y,其中x=-1,y=2
化简求值:2(x的平方y+xy)-3(x平方y+xy)-4x平方y,其中x=-1,y=2