分式通分1.1/ax 1/bx 2.b/a-x c/ay-xy 3.2/x+1 2/x+2 4.1/2x+5 2/4x&
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分式通分1.1/ax 1/bx 2.b/a-x c/ay-xy 3.2/x+1 2/x+2 4.1/2x+5 2/4x²-25 最简公分母也写上
1.1/ax =b/abx
1/bx=a/abx
最简公分母:abx
2.b/a-x=by/(a-x)y
c/ay-xy =c/(a-x)y
最简公分母:(a-x)y
3.2/x+1=2(x+2)/(x+1)(x+2)
2/x+2=2(x+1)/(x+1)(x+2)
最简公分母:(x+1)(x+2)
4.1/2x+5=(2x-5)/(2x-5)(2x+5)
2/4x²-25 =2/(2x-5)(2x+5)
最简公分母:(2x-5)(2x+5)
再问: 计算题:xy(x+y)/(x-y)² X x-y/xy+y² (y/6x²)²÷(-y²/4x)²
再答: xy(x+y)/(x-y)² X x-y/xy+y² =xy(x+y)/(x-y)² X x-y/y(x+y) =x/(x-y) (y/6x²)²÷(-y²/4x)² =y^2/36x^4÷(y^4/16x^2) =y^2/36x^4X16x^2/y^4 =4/9x^2y^2 “^”后面是几次方的意思
再答: 不客气
再问: 呵呵呵
1/bx=a/abx
最简公分母:abx
2.b/a-x=by/(a-x)y
c/ay-xy =c/(a-x)y
最简公分母:(a-x)y
3.2/x+1=2(x+2)/(x+1)(x+2)
2/x+2=2(x+1)/(x+1)(x+2)
最简公分母:(x+1)(x+2)
4.1/2x+5=(2x-5)/(2x-5)(2x+5)
2/4x²-25 =2/(2x-5)(2x+5)
最简公分母:(2x-5)(2x+5)
再问: 计算题:xy(x+y)/(x-y)² X x-y/xy+y² (y/6x²)²÷(-y²/4x)²
再答: xy(x+y)/(x-y)² X x-y/xy+y² =xy(x+y)/(x-y)² X x-y/y(x+y) =x/(x-y) (y/6x²)²÷(-y²/4x)² =y^2/36x^4÷(y^4/16x^2) =y^2/36x^4X16x^2/y^4 =4/9x^2y^2 “^”后面是几次方的意思
再答: 不客气
再问: 呵呵呵
分式通分1.1/ax 1/bx 2.b/a-x c/ay-xy 3.2/x+1 2/x+2 4.1/2x+5 2/4x&
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