通分: (1)x/2(x+1),1/x二次方-x (2)1/a二次方-4a+4,a/a二次方-4,1/2a+4
1个回答
2016-11-20
展开全部
(1)
公分母掘运{2x(x+1)(x-1)}
x/ {2(x+1)} = x²(x-1) / {2x(x+1)(x-1)}
1/ {x二次方-x} = 2(x+1) / {2x(x+1)(x-1)}
(罩物2)
公分母 = {2(a+2)(a-2)²}
1/(a二次方-4a+4) = 2(a+2) / {2(a+2)(a-2)²}
a/(a二判闷梁次方-4) = 2a(a-2) / {2(a+2)(a-2)²}
1/(2a+4) = (a-2)² / {2(a+2)(a-2)²}
公分母掘运{2x(x+1)(x-1)}
x/ {2(x+1)} = x²(x-1) / {2x(x+1)(x-1)}
1/ {x二次方-x} = 2(x+1) / {2x(x+1)(x-1)}
(罩物2)
公分母 = {2(a+2)(a-2)²}
1/(a二次方-4a+4) = 2(a+2) / {2(a+2)(a-2)²}
a/(a二判闷梁次方-4) = 2a(a-2) / {2(a+2)(a-2)²}
1/(2a+4) = (a-2)² / {2(a+2)(a-2)²}
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