Mấy bài pt vô tỉ rắc rối quá! giúp tôi với^^

**g123456** · 09-25-2011, 03:53 PM

PHƯƠNG TRÌNH VÔ TỈ

1. $\sqrt{(x+2)(2x+1)}-3\sqrt{x+6}=4-\sqrt{(x+6)(2x+1)}+3\sqrt{x+2}$

2. $4\sqrt{x+1}-1=3x+2\sqrt{1-x}+\sqrt{1-{x}^{2}$

3. $\sqrt{x}-\sqrt[3]{1-x}= 5-4x$

4. $2({x}^{2}+2)=5\sqrt{x}^{3}+1}$

5. $x+2\sqrt{7-x}=2\sqrt{x-1}+\sqrt{{-x}^{2}+8x-7}+1$

6. $\sqrt[3]{x-1}+\sqrt[3]{x+1}=2x+1$

7. $\sqrt{{x}^{2}+x+2}=\frac{3{x}^{2}+3x+2}{3x+1}$

8. $x=(2004+\sqrt{x})(1-\sqrt{1-\sqrt{x}})^2$