化简求值[(2x²+y)²-5y(3x²+1)-4(x²+y)(x²-
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/06/30 22:07:22
化简求值[(2x²+y)²-5y(3x²+1)-4(x²+y)(x²-y)]/5x²y,其中x=1,y=15分之1
其中x=1,y=15分之1打错了,是其中x=1,y=15分之2
其中x=1,y=15分之1打错了,是其中x=1,y=15分之2
2×2的y [2 Y +2(2-XY)] + Y
= 2×2的y(X 2 Y +2×2γ-2XY)+ Y
= 2X 2 Y-(3×2的y 2XY)+ Y
= 2X 2γ-3X 2 Y +2 XY + Y
=-X 2 Y +2 XY + Y
=-Y( ×2-2X-1)
=-Y [2 - (2 +1)]
= - (2011/2012)(×2×2的)
= 0
= 2×2的y(X 2 Y +2×2γ-2XY)+ Y
= 2X 2 Y-(3×2的y 2XY)+ Y
= 2X 2γ-3X 2 Y +2 XY + Y
=-X 2 Y +2 XY + Y
=-Y( ×2-2X-1)
=-Y [2 - (2 +1)]
= - (2011/2012)(×2×2的)
= 0
一、 化简求值1 (x-2-(12)/(x+2))/(4-x)/(x+2)2【(x-y)²+(x+y)(x-y
化简求值[(2x²+y)²-5y(3x²+1)-4(x²+y)(x²-
先化简再求值:(x-2y)²-(x+2y)(x-2y)-(x-3y)(x-y).其中x²+9y
化简求值 【2x²-(x+y)(x-y)][(x+y-1)(x-y+1)+1-2y],其中x=-1,y=-2
(x+y)(x-2y)(x²-4y²) 其中x=8 y=-8 化简求值
化简求值[1-(2x/x+y)]÷ (x²-2xy+y²/3x+3y)+(x²+xy/x&
化简求值:【(x+2y)²-(x+y)(3x-y)-5y²]/2x,其中x=-2,y=二分之一详细过
先化简,在求值:(x-y)²+(3x-2y)(2x+y)-x(6x-y)
化简求值 当(x-3/16)²+|y+3/17|=0时,求[(y-2x)·(-2x-y)-4(x-2y)
化简求值:(1)2x²-y²+(2y²-x²)-(x²+2y²
(先化简,再求值)3x²y-【5x²y+2(x²y-1/2)+x²y】+6x
化简求值3x[xy-2x(y-2x)]+3y(x²-y²),其中x=-1,y=2