分式的加减计算题 急(2a-b分之2a)+(b- 2a分之b)(x-2分之4)+(2-x分之x+2)(4a的平方分之b的平方)-(a分之c)1-(x+1分之1)r1分之1+r2分之1(x+1分之x+2)-(x+2分之x+1)(a+1分之a-1)-(a分之1)
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![分式的加减计算题 急(2a-b分之2a)+(b- 2a分之b)(x-2分之4)+(2-x分之x+2)(4a的平方分之b的平方)-(a分之c)1-(x+1分之1)r1分之1+r2分之1(x+1分之x+2)-(x+2分之x+1)(a+1分之a-1)-(a分之1)](/uploads/image/z/1848891-3-1.jpg?t=%E5%88%86%E5%BC%8F%E7%9A%84%E5%8A%A0%E5%87%8F%E8%AE%A1%E7%AE%97%E9%A2%98+%E6%80%A5%282a-b%E5%88%86%E4%B9%8B2a%29%2B%EF%BC%88b-+2a%E5%88%86%E4%B9%8Bb%EF%BC%89%28x-2%E5%88%86%E4%B9%8B4%29%2B%EF%BC%882-x%E5%88%86%E4%B9%8Bx%2B2%EF%BC%89%EF%BC%884a%E7%9A%84%E5%B9%B3%E6%96%B9%E5%88%86%E4%B9%8Bb%E7%9A%84%E5%B9%B3%E6%96%B9%EF%BC%89-%EF%BC%88a%E5%88%86%E4%B9%8Bc%291-%28x%2B1%E5%88%86%E4%B9%8B1%EF%BC%89r1%E5%88%86%E4%B9%8B1%2Br2%E5%88%86%E4%B9%8B1%EF%BC%88x%2B1%E5%88%86%E4%B9%8Bx%2B2%29-%EF%BC%88x%2B2%E5%88%86%E4%B9%8Bx%2B1%EF%BC%89%EF%BC%88a%2B1%E5%88%86%E4%B9%8Ba-1%EF%BC%89-%EF%BC%88a%E5%88%86%E4%B9%8B1%EF%BC%89)
分式的加减计算题 急(2a-b分之2a)+(b- 2a分之b)(x-2分之4)+(2-x分之x+2)(4a的平方分之b的平方)-(a分之c)1-(x+1分之1)r1分之1+r2分之1(x+1分之x+2)-(x+2分之x+1)(a+1分之a-1)-(a分之1)
分式的加减计算题 急
(2a-b分之2a)+(b- 2a分之b)
(x-2分之4)+(2-x分之x+2)
(4a的平方分之b的平方)-(a分之c)
1-(x+1分之1)
r1分之1+r2分之1
(x+1分之x+2)-(x+2分之x+1)
(a+1分之a-1)-(a分之1)
分式的加减计算题 急(2a-b分之2a)+(b- 2a分之b)(x-2分之4)+(2-x分之x+2)(4a的平方分之b的平方)-(a分之c)1-(x+1分之1)r1分之1+r2分之1(x+1分之x+2)-(x+2分之x+1)(a+1分之a-1)-(a分之1)
2a/(2a-b)+b/(b-2a)=2a/(2a-b)-b/(2a-b)=(2a-b)/(2a-b)=1
4/(x-2)+(x+2)/(2-x)=4/(x-2)-(x+2)/(x-2)=(2-x)/(x-2)=-1
b^2/4a^2-c/a=(b^2-4ac)/4a^2
1-1/(x+1)=x/(x+1)
1/r1+1/r2=(r1+r2)/r1r2
(x+2)/(x+1)-(x+1)/(x+2)=[(x-2)^2-(x+1)^2]/[(x+1)(x+2)]=(x-1)(-3)/[(x+1)(x+2)]=-3(x-1)/[(x+1)(x+2)]
(a-1)/(a+1)-1/a=(a^2-a-a-1)/[a(a+1)]=(a^2-2a-1)/[a(a+1)]