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- Trường Tiểu Học DIễn Thành
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
Giải các phương trình vô tỉ sau:
a) [tex]\sqrt{x^2+x-1}+\sqrt{-x^2+x+1}=x^2-x+2[/tex] [tex]\sqrt{x^2+x-1}+\sqrt{-x^2+x+1}=x^2-x+2[/tex]
b) [tex]\sqrt{x-2}+\sqrt{4-x}=2x^2-5x-1[/tex]
c) [tex]x+\sqrt{x+\frac{1}{2}+\sqrt{x+\frac{1}{4}}}=2[/tex]
d) [tex]\sqrt{x^2+10x+21}=3\sqrt{x+3}+2\sqrt{x+7}-6[/tex]
e) [tex]x(x+5)=2.\sqrt[3]{x^2+5x-2}-2[/tex]
a) [tex]\sqrt{x^2+x-1}+\sqrt{-x^2+x+1}=x^2-x+2[/tex] [tex]\sqrt{x^2+x-1}+\sqrt{-x^2+x+1}=x^2-x+2[/tex]
b) [tex]\sqrt{x-2}+\sqrt{4-x}=2x^2-5x-1[/tex]
c) [tex]x+\sqrt{x+\frac{1}{2}+\sqrt{x+\frac{1}{4}}}=2[/tex]
d) [tex]\sqrt{x^2+10x+21}=3\sqrt{x+3}+2\sqrt{x+7}-6[/tex]
e) [tex]x(x+5)=2.\sqrt[3]{x^2+5x-2}-2[/tex]