Giải các phương trình:
1) \(\sqrt{x^2-2x+1}=x^2-1\)
2) \(\sqrt{4x^2-4x+1}=x-1\)
3) \(\sqrt{x^4-2x^2+1}=x-1\)
4) \(\sqrt{x^2+x+\frac{1}{4}}=x\)
5) \(\sqrt{x^4-8x^2+16}=2-x\)
6) \(\sqrt{9x^2+6x+1}=\sqrt{11-6\sqrt{2}}\)
giải phương trình:
a/\(\frac{\sqrt{x}-2}{\sqrt{x}-5}=\frac{\sqrt{x}-4}{\sqrt{x}-6}\)
b/\(\sqrt{18x+9}-\sqrt{8x+4}+\frac{1}{3}\sqrt{2x+1}=4\)
c/\(\sqrt{4x-8}-\frac{1}{2}\sqrt{x-2}+\sqrt{9x-18}=9\)
Giải PT:
a) \(\dfrac{9x-7}{\sqrt{7x+5}}=\sqrt{7x+5}.\)
b) \(\sqrt{4x-20}+3\sqrt{\dfrac{x-5}{9}}-\dfrac{1}{3}\sqrt{9x-45}=4.\)
c) \(2x-x^2+\sqrt{6x^2-12x+7}=0.\)
d) \(\left(x+1\right)\left(x+4\right)-3\sqrt{x^2+5x+2}=6.\)
giải phương trình:
\(2x+3+\sqrt{4x^2+9x+2}=2\sqrt{x+2}+\sqrt{4x+1}\)
Giải phương trình
1) \(3x^2+6x-\frac{4}{3}=\sqrt{\frac{x+7}{3}}\)
2) \(9x^2-x-4=2\sqrt{x+3}\)
3) \(x^2+\sqrt{x+5}=5\)
4) \(2x^2+2x+1=\left(4x-1\right).\sqrt{x^2+1}\)
5) \(x\sqrt{x^2-x+1}+2\sqrt{3x+1}=x^2+x+3\)
tìm x:
\(\sqrt{x^2+x+1}=1\)
\(\sqrt{x^2+1}=-3\)
\(\sqrt{x^2-10x+25}=7-2x\)
\(\sqrt{2x+5}=5\)
\(\sqrt{x^2-4x+4}-2x+5=0\)
Tìm x:
a) \(\left(5x-6\right)^2-\frac{1}{\sqrt{5x-7}}=x^2-\frac{1}{\sqrt{x-1}}\)
b) \(4x^3+x-\left(x+1\right)\sqrt{2x+1}=0\)
c) \(\frac{\sqrt{x+1}-2}{\sqrt[3]{2x+1}-3}=\frac{1}{x+2}\)
d) \(-2x^3+10x^2-17x+8=2x^2\sqrt[3]{5x-x^2}\)
e) \(9x^2-28x+21=\sqrt{x-1}\)
f) \(3x\left(2+\sqrt{9x^2+3}\right)+\left(4x+2\right)\sqrt{1+x+x^2}+1=0\)
Mng giúp em với ạ, em cảm ơn
Bài 1: Giải PT
a) \(\sqrt{x^2-1}-x^2+1=0\)
b) \(\sqrt{x^2-4}-x+2=0\)
c) \(\sqrt{x^4-8x^2+16}=2-x\)
d) \(\sqrt{9x^2+6x+1}\sqrt{11-6\sqrt{2}}\)
e) \(\sqrt{4^2-9}=2\sqrt{2x+3}\)
f) \(\sqrt{4x-20}+3\sqrt{\dfrac{x-5}{9}}-\dfrac{1}{3}\sqrt{9x-45}=4\)
giải phương trình
a) \(\sqrt{2x^2-\sqrt{2}x+\frac{1}{4}}=\sqrt{2}x\)
b) \(\sqrt{4x+8}+\frac{1}{3}\sqrt{9x+18}=3\sqrt{\frac{x+2}{4}}+\sqrt{2}\)