\(\frac{3}{2}\)- 2.x = 25%
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mk sắp phải đi học rồi các bạn giúp mình với có đc ko mk nhớ sẽ đền đáp công ơn của bạn
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\(\left(x+\frac{1}{2}\right)\cdot\left(\frac{2}{3}-2x\right)=0\)
TH1 : \(\Rightarrow x+\frac{1}{2}=0\)
\(x=0-\frac{1}{2}\)
\(x=\frac{-1}{2}\)
TH2 : \(\Rightarrow\frac{2}{3}-2x=0\)
\(2x=0+\frac{2}{3}=\frac{2}{3}\)
\(x=\frac{2}{3}\div2=\frac{1}{3}\)
\(\Rightarrow x=\frac{-1}{2};\frac{1}{3}\)
\(\left(x+\frac{1}{5}\right)^2+\frac{17}{25}=\frac{26}{25}\)
\(\left(x+\frac{1}{5}\right)^2=\frac{26}{25}-\frac{17}{25}\)
\(\left(x+\frac{1}{5}\right)^2=\frac{9}{25}=\left(\frac{3}{5}\right)^2\)
\(x=\frac{3}{5}^2-\frac{1}{5}^2\)
\(x=\frac{2}{5}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
ĐKXĐ:...
\(\left(\frac{\sqrt{x}\left(\sqrt{x}-5\right)}{\left(\sqrt{x}-5\right)\left(\sqrt{x}+5\right)}-1\right):\left(\frac{25-x}{\left(\sqrt{x}-3\right)\left(\sqrt{x}+5\right)}-\frac{\left(\sqrt{x}+3\right)\left(\sqrt{x}-3\right)}{\left(\sqrt{x}-3\right)\left(\sqrt{x}+5\right)}+\frac{\left(\sqrt{x}-5\right)\left(\sqrt{x}+5\right)}{\left(\sqrt{x}-3\right)\left(\sqrt{x}+5\right)}\right)\)
\(=\left(\frac{\sqrt{x}-\sqrt{x}-5}{\sqrt{x}+5}\right):\left(\frac{25-x-x+9+x-25}{\left(\sqrt{x}-3\right)\left(\sqrt{x}+5\right)}\right)=\frac{-5}{\left(\sqrt{x}+5\right)}.\frac{\left(\sqrt{x}-3\right)\left(\sqrt{x}+5\right)}{\left(9-x\right)}\)
\(=\frac{5\left(\sqrt{x}-3\right)}{\left(\sqrt{x}+3\right)\left(\sqrt{x}-3\right)}=\frac{5}{\sqrt{x}+3}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(x:2+x:\frac{5}{2}+x:\frac{1}{3}=\frac{-18}{25}\)
\(x.\frac{1}{2}+x.\frac{2}{5}+x.3=\frac{-18}{25}\)
\(x.\left(\frac{1}{2}+\frac{2}{5}+3\right)=\frac{-18}{25}\)
\(x.\frac{39}{10}=\frac{-18}{25}\)
\(x=\frac{-18}{25}:\frac{39}{10}\)
\(x=\frac{-12}{65}\)
Chúc bn học tốt !!!
\(\frac{3}{2}-2x=25\%\)
\(\frac{3}{2}-2x=\frac{1}{4}\)
\(2x=\frac{3}{2}-\frac{1}{4}\)
\(2x=\frac{5}{4}\)
\(x=\frac{5}{4}:2\)
\(x=\frac{5}{8}\)
\(\frac{3}{2}\)- 2.x = 25%
\(\frac{3}{2}\)- 2.x = \(\frac{1}{4}\)
2 . x = \(\frac{3}{2}-\frac{1}{4}\)
2 . x = \(\frac{5}{4}\)
x = \(\frac{5}{4}\): 2
x = \(\frac{5}{8}\)