Violympic toán 9
Các câu hỏi tương tự
Giải phương trình :
3\(\sqrt[3]{x-3}+4\sqrt[3]{8x-24}-\frac{1}{3}\sqrt[3]{27x-81}=-20\)
giai phuong trinh :
\(\dfrac{\sqrt{x+3}+\sqrt{x-1}}{\sqrt{x+3}-\sqrt{x-1}}=\dfrac{13-x^2}{4}\)
Giai phuong trinh \(\sqrt{2x^2+8x+6}+\sqrt{x^2-1}=2x+2\)
Cho phuong trinh : x+m=\(\sqrt{x+1}\) (1)
1/giai phuong trinh (1) khi m=1
2/giai va bien luan phuong trinh (1)theo m
1) giai phuong trinh:
a) \(x+\sqrt{2x+3}=2x\left(x-2\right)\)
giai phuong trinh \(\sqrt{x\left(x-3\right)}-\sqrt{7x-3}=2\sqrt{x^2}\)
giai phuong trinh: \(\sqrt{2x^2-1}+\sqrt{x^2-3x-2}=\sqrt{2x^2+2x+3}+\sqrt{x^2-x-1}\)
Giai he phuong trinh : \(\left\{{}\begin{matrix}x^2+y^2+xy=3\\x^2+xy=7x+5y-9\end{matrix}\right.\)
Giai phuong trinh
1/ \(\sqrt{x-3}+\sqrt{2-x}=5\)
2/ \(2x+7\sqrt{x}+\dfrac{7}{\sqrt{x}}+\dfrac{2}{x}+9=0\)
3/ \(x+\dfrac{1}{x}-4\sqrt{x}-\dfrac{4}{\sqrt{x}}+6=0\)
4/ \(\sqrt{x+9}=5-\sqrt{x-2}\)