(5x^-2/3 y^1/2)(-1/4x^-1 y^1/2)(-5/6x^1/3 y^-1/6)分数指数幂化简求值
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/30 14:36:28
(5x^-2/3 y^1/2)(-1/4x^-1 y^1/2)(-5/6x^1/3 y^-1/6)分数指数幂化简求值
![(5x^-2/3 y^1/2)(-1/4x^-1 y^1/2)(-5/6x^1/3 y^-1/6)分数指数幂化简求值](/uploads/image/z/16616204-44-4.jpg?t=%285x%5E-2%2F3+y%5E1%2F2%29%28-1%2F4x%5E-1+y%5E1%2F2%29%28-5%2F6x%5E1%2F3+y%5E-1%2F6%29%E5%88%86%E6%95%B0%E6%8C%87%E6%95%B0%E5%B9%82%E5%8C%96%E7%AE%80%E6%B1%82%E5%80%BC)
(5x^-2/3 y^1/2)(-1/4x^-1 y^1/2)(-5/6x^1/3 y^-1/6)
=(5x1/4x5/6)x^(-2/3-1+1/3) y^(1/2+1/2-1/6)
=25/24 x^-4/3 y^5/6
=(5x1/4x5/6)x^(-2/3-1+1/3) y^(1/2+1/2-1/6)
=25/24 x^-4/3 y^5/6
化简求值:(x+y)-(2x+1/2y)-(3x+1/6y)-(4x+1/12y)-(5x+1/20y)-.(10x+1
先化简再求值(x-y)(x+y)-(x-2y) 的完全平方+x(3x-5y)-(x-y)(x-2y),其中x=1/2 y
化简求值{(x=2y)(5x-2y)-(3x+2y)(3x-2y)]/4x,其中x=2,y=-1
化简,并求值2(x-2y)²-4(x+3y)(x-3y)-2(x-y).(y+x)-5(-x-1)²
化简求值:(7x-2y)(3x-2y-1)-(4x+3y)(9x+6y),其中x=2,y=-1
先化简再求值 5x-{2y-3x+[5x-2(y-2x)+3y]} 其中x=-1/2,y=-1/6
先化简,再求值.5x-{2y-3x+[5x-2(y-2x)+3y]} 其中x= -1/2 ,y= -1/6
先化简,再求值:[(3x-y)(2x+4y)-(x+2y)(5x-2y)],其中x=-2,y=1
(先化简,再求值)3x²y-【5x²y+2(x²y-1/2)+x²y】+6x
化简求值(x+2y)^2-(2x+y)(2x-y)-5y(y-x) 其中 x=1/3 y= -1/2
(X-Y)²+(3X-2Y)(2X+Y)-X(6X-Y),其中X=½,Y=1(先化简再求值)
先化简,再求值:[(x+y)(x-y)-(x-y)^2+2y(x-3y)]/(-4y),其中x=1,y=-2