a) \(\sqrt{2x+3}\sqrt{x+1}=3x+2\sqrt{\left(2x+3\right)\left(x+1\right)}-16\)
b) \(\sqrt{3x-2}+\sqrt{x-1}=4x-9+2\sqrt{3x^2-5x+2}\)
a, giải pt 1, \(\sqrt{x+4}+\sqrt{x-4}=2x-12+2\sqrt{x^2-16}\)
2, \(\sqrt{2x+1}+3\sqrt{4x^2-2x+1}=3+\sqrt{8x^3+1}\)
b, giải hpt 1, \(\left\{{}\begin{matrix}x^2+4y^2-5=0\\4x^2y+8xy^2+5x+10y-1=0\end{matrix}\right.\)
2, \(\left\{{}\begin{matrix}x^2-2x+2y-3=0\\16x^2-8xy^2+y^4-2y+4=0\end{matrix}\right.\)
Giải phương trình:
a) \(\sqrt{x-2+\sqrt{2x-5}}+\sqrt{x+2+3\sqrt{2x-5}}=7\sqrt{2}\).
b) \(x^2-4x=\sqrt{x+2}\), với \(x\ge2\).
c) \(x^2-7x+2\left(x-2\right)\sqrt{x+1}+1=0\).
giải các bất phương trình sau :
a ) \(\sqrt{x+1}\)+ \(\sqrt{x-2}\) < \(\sqrt{x+3}\)
b ) \(\sqrt{x^2+5x-14}\) > x - 5
c ) \(\dfrac{2x^2}{\left(3-\sqrt{9+2x}\right)^2}\) < 21+x
d ) \(\sqrt{2x^2-6x+1}-x+2\) > 0
Giải phương trình: \(x^2+3-x\sqrt{2x-1}=3x\sqrt{2x^2-5x+2}-\sqrt{x-2}\)
Giải pt:
\(\sqrt{x^2+1}-x=\frac{5}{2\sqrt{x^2+1}}\)
\(\sqrt{5x-1}=\sqrt{3x-2}-\sqrt{2x-3}\)
Giải các phương trình sau :
a)\(\left|\dfrac{x+5}{-x^2+9}\right|=2\)
b)\(\dfrac{4}{\sqrt{2-x}}-\sqrt{2-x}=2\)
c)\(^{x^2-6x+9=4\sqrt{x^2-6x+6}}\)
d)\(\sqrt{x-3}=\dfrac{2}{\sqrt{x}-2}\)
e)\(\sqrt{x+1}=8-\sqrt{3x+1}\)
f')(x-2)\(\sqrt{2x+7}=x^2-4\)
g)\(\sqrt{x+2\sqrt{x-1}}+\sqrt{x-2\sqrt{x-1}}=x-1\)
h)\(\sqrt{x+4}-\sqrt{1-x}=\sqrt{1-2x}\)
i) \(\sqrt{x+4}-\sqrt{3x+1}+2\sqrt{3x^2+13x+4}=51-4x\)
k)\(\dfrac{x-2}{1-x}+\dfrac{x-3}{x+1}=\dfrac{x^2+4x+15}{x^2-1}\)
Giải các phương trình :
a) \(\sqrt{5x+3}=3x-7\)
b) \(\sqrt{3x^2-2x-1}=3x+1\)
c) \(\dfrac{\sqrt{4x^2+7x-2}}{x+2}=\sqrt{2}\)
d) \(\sqrt{2x^2+3x-4}=\sqrt{7x+2}\)
GHPT :
\(\left\{{}\begin{matrix}\sqrt{5x^2+2xy+2y^2}+\sqrt{2x^2+2xy+5y^2}=3\left(x+y\right)\\3x\left(y-7\right)+10=\sqrt{10x-2}+2\sqrt{8y-3}\end{matrix}\right.\)