Giải phương trình:
1, 3x^2+6x-3sqrt{dfrac{x+7}{3}} (2 cách khác nhau )
2, left(sqrt{3x+1}-sqrt{x-2}right)left(sqrt{3x^2+7x+2}+4right)4x-2
3, sqrt{-3x-1}+sqrt{9x^2+9x+3}-9x^2-6x
4, sqrt{x^2+x-6}+3sqrt{x-1}sqrt{5x^2-1}
5, left(sqrt{x+4}+2right)left(x+2sqrt{x-5}+1right)6x
6, sqrt{5-x^4}-sqrt[3]{3x^2-2}1
7, 3x^2+11+sqrt{x-2}+sqrt{2x+3}14x
8, sqrt{x-sqrt{x-sqrt{x-sqrt{x-7}}}}7
9, sqrt{2x^2-1}+3xsqrt{x^2-1}3x^3+2x^2-9x-7 ( với x0 )
Đọc tiếp
Giải phương trình:
1, \(3x^2+6x-3=\sqrt{\dfrac{x+7}{3}}\) (2 cách khác nhau )
2, \(\left(\sqrt{3x+1}-\sqrt{x-2}\right)\left(\sqrt{3x^2+7x+2}+4\right)=4x-2\)
3, \(\sqrt{-3x-1}+\sqrt{9x^2+9x+3}=-9x^2-6x\)
4, \(\sqrt{x^2+x-6}+3\sqrt{x-1}=\sqrt{5x^2-1}\)
5, \(\left(\sqrt{x+4}+2\right)\left(x+2\sqrt{x-5}+1\right)=6x\)
6, \(\sqrt{5-x^4}-\sqrt[3]{3x^2-2}=1\)
7, \(3x^2+11+\sqrt{x-2}+\sqrt{2x+3}=14x\)
8, \(\sqrt{x-\sqrt{x-\sqrt{x-\sqrt{x-7}}}}=7\)
9, \(\sqrt{2x^2-1}+3x\sqrt{x^2-1}=3x^3+2x^2-9x-7\) ( với \(x>0\) )