分式计算
(1)8x²·(-3x/4y³)·(-6z/x²y)(2)4xy²z÷(-2x的-2次yz)(3)化简:[a+1/(a-1)][1...
(1)8x²·(-3x/4y³)·(-6z/x²y)
(2)4xy²z÷(-2 x的-2次yz)
(3)化简:[a+1/(a-1)][1/(1+a³)-1)÷a³/(1-a)
[a+1/(a-1)]是a+[1/(a-1)] 展开
(2)4xy²z÷(-2 x的-2次yz)
(3)化简:[a+1/(a-1)][1/(1+a³)-1)÷a³/(1-a)
[a+1/(a-1)]是a+[1/(a-1)] 展开
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分式计算
(1)8x²·(-3x/4y³)·(-6z/x²y)
=-6x³/4y³)·(-6z/x²y)
=36xz/y^4
(2)4xy²z÷(-2 x的-2次yz)
=4xy²z÷(-2 yz/x²)
=-2x³y
(3)化简:
[a+1/(a-1)][1/(1+a³)-1)÷a³/(1-a)
=(a²-a+1)/(a-1)(-a³/(1+a³)(1-a)/a³
=(a²-a+1)/(a-1)a³/[(a+1)(a²-a+1)](a-1)/a³
=1/(1+a)
(1)8x²·(-3x/4y³)·(-6z/x²y)
=-6x³/4y³)·(-6z/x²y)
=36xz/y^4
(2)4xy²z÷(-2 x的-2次yz)
=4xy²z÷(-2 yz/x²)
=-2x³y
(3)化简:
[a+1/(a-1)][1/(1+a³)-1)÷a³/(1-a)
=(a²-a+1)/(a-1)(-a³/(1+a³)(1-a)/a³
=(a²-a+1)/(a-1)a³/[(a+1)(a²-a+1)](a-1)/a³
=1/(1+a)
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