\(\sqrt{4x^2-2.2.3x+9}=x-1\Leftrightarrow\sqrt{\left(2x-3\right)^2}=x-3\)
đk \(x\ge\frac{3}{2}\)
\(\Leftrightarrow2x-3=x^2-6x+9\Leftrightarrow x^2-8x+12=0\)
\(\left[{}\begin{matrix}x=6\\x=2\end{matrix}\right.\)
\(\sqrt{4x^2-2.2.3x+9}=x-1\Leftrightarrow\sqrt{\left(2x-3\right)^2}=x-3\)
đk \(x\ge\frac{3}{2}\)
\(\Leftrightarrow2x-3=x^2-6x+9\Leftrightarrow x^2-8x+12=0\)
\(\left[{}\begin{matrix}x=6\\x=2\end{matrix}\right.\)
Giải các phương trình:
a) \(\sqrt{x^2-3x+2}=\sqrt{x-1}\)
b) \(\sqrt{x^2-4x+4}=\sqrt{4x^2-12x+9}\)
c) \(\sqrt{x^2-5x+6}=\sqrt{x-2}\)
d) \(\sqrt{4x^2-4x+1}=\sqrt{x^2-6x+9}\)
Giải pt sau:
1/ \(\sqrt{4x^2-12x+9}=3-2x\)
2/ \(\sqrt{x^2-2\sqrt{2}x+2}=\sqrt{9-4\sqrt{2}}-\sqrt{3+2\sqrt{2}}\)
Giải pt sau:
1/ \(\sqrt{4x^2-12x+9}=3-2x\)
2/ \(\sqrt{x^2-2\sqrt{2}x+2}=\sqrt{9-4\sqrt{2}}-\sqrt{3+2\sqrt{2}}\)
\(\sqrt{4x^2-3x+1}-2\sqrt{9-12x+4x^2}-x+2=0\)
Giải Các phương trình sau:
1. \(\left|x^2-3\right|=\left|x-\sqrt{3}\right|\)
2.\(\sqrt{9x^2-12x+4}=\sqrt{x^2}\)
3.\(\sqrt{x^2-4x+4}=\sqrt{4x^2-12x+9}\)
4.\(\sqrt{x^2-8x+16}+\left|x+2\right|=0\)
Giúp mình nha~ cần gấp lắm~
Gỉai Phương trình:
a) \(3x-1-\sqrt{4x^2-12x+9}\)
b) \(\sqrt{3-2\sqrt{2}}-\sqrt{x^2-2x\sqrt{3}+3}\)
Giải phương trình sau:
a) \(\sqrt{4x+20}-3\sqrt{5+x}+\dfrac{4}{3}\sqrt{9x+45}=6\)
b) \(\dfrac{1}{2}\sqrt{x-1}-\dfrac{3}{2}\sqrt{9x-9}+24\sqrt{\dfrac{x-1}{64}}=-17\)
c) \(2x-x^2+\sqrt{6x^2-12x+7}=0\)
d) \(\left(x+1\right)\left(x+4\right)-3\sqrt{x^2+5x+2}=6\)
Gỉai Phương trình:
a) \(3x-1-\sqrt{4x^2-12x+9}=0\)
b) \(\sqrt{3-2\sqrt{2}}-\sqrt{x^2-2x\sqrt{3+3}}=0\)
\(\sqrt{12-\frac{12}{x^2} }+\sqrt{x^2+\frac{12}{x} }=x^2+\frac{25}{2} \)
\(\frac{\sqrt[3]{10-x}+\sqrt[3]{8-x}}{\sqrt[3]{10-x}-\sqrt[3]{8-x}}=9-x \)
\(4x^2+\sqrt{2x+1}+5=12x\)
1) Tìm x biết
a) \(\sqrt{4x-20}+\sqrt{x-5}-\frac{1}{3}=\sqrt{9x-45}=4\)
b) \(\sqrt{16x-32x}-\sqrt{12x}=\sqrt{3x}+\sqrt{9-18x}\)
c) \(\sqrt{4x-20}-3\sqrt{\frac{x-5}{9}}=\sqrt{1-x}\)