Giúp Mk mí bài nha...........Mơn nhìu
GIẢI CÁC PHƯƠNG TRÌNH
1/ dfrac{x+2}{x+1} + dfrac{3}{x-2} dfrac{3}{x^2-x-2} +1
2/dfrac{x+6}{x-5} + dfrac{x-5}{x+6} dfrac{2x^2+23x+61}{x^2+x-30}
3/ dfrac{6}{x-5} + dfrac{x+2}{x-8}dfrac{18}{left(x-5right)left(8-xright)}-1
4/ dfrac{x-4}{x-1}+dfrac{x+4}{x+1}2
5/dfrac{3}{x+1}-dfrac{1}{x-2}dfrac{9}{left(x+1right)left(2-xright)}
6/ dfrac{x^2-x}{x+3}-dfrac{x^2}{x-3}dfrac{7x^2-3x}{9-x^2}
7/dfrac{x+1}{x^2+x+1}-dfrac{x-1}{x^2-x+1}dfrac{3}{xleft(x^4+x^...
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Giúp Mk mí bài nha...........Mơn nhìu
GIẢI CÁC PHƯƠNG TRÌNH
1/ \(\dfrac{x+2}{x+1}\) + \(\dfrac{3}{x-2}\) = \(\dfrac{3}{x^2-x-2}\) +1
2/\(\dfrac{x+6}{x-5}\) + \(\dfrac{x-5}{x+6}\) = \(\dfrac{2x^2+23x+61}{x^2+x-30}\)
3/ \(\dfrac{6}{x-5}\) + \(\dfrac{x+2}{x-8}=\dfrac{18}{\left(x-5\right)\left(8-x\right)}-1\)
4/ \(\dfrac{x-4}{x-1}+\dfrac{x+4}{x+1}=2\)
5/\(\dfrac{3}{x+1}-\dfrac{1}{x-2}=\dfrac{9}{\left(x+1\right)\left(2-x\right)}\)
6/ \(\dfrac{x^2-x}{x+3}-\dfrac{x^2}{x-3}=\dfrac{7x^2-3x}{9-x^2}\)
7/\(\dfrac{x+1}{x^2+x+1}-\dfrac{x-1}{x^2-x+1}=\dfrac{3}{x\left(x^4+x^2+1\right)}\)
8/ \(\dfrac{x+2}{x^2+2x+4}-\dfrac{x-2}{x^2-2x+4}=\dfrac{6}{x\left(x^4+4x^2+16\right)}\)
9/ \(\dfrac{1+a}{1-x}=1-a\) (a là hằng số)
10/ \(\dfrac{x}{2a+x}+\dfrac{2a+x}{2a-x}=\dfrac{8a^2}{x^2-4a^2}\) (a là hằng số)
11/ \(\dfrac{2a-3b}{x-2a}+\dfrac{3b-2a}{x-3b}=0\) (a là hằng số)