Xét \(x\ge\frac{1}{3}\) , pt trở thành \(\left(3x-1\right)+\left(2x+5\right)=4\)
\(\Leftrightarrow x=0\) (loại)
Xét \(x\le-\frac{5}{2}\) , pt trở thành \(\left(1-3x\right)-\left(2x+5\right)=4\)
\(\Leftrightarrow x=-\frac{8}{5}\) (loại)
Xét \(-\frac{5}{2}\le x\le\frac{1}{3}\) , pt trở thành \(\left(1-3x\right)+\left(2x+5\right)=4\)
\(\Leftrightarrow x=2\) (loại)
Vậy phương trình vô nghiệm
1) giải pt \(-3x^2+x+3+\left(\sqrt{3x+2}-4\right)\sqrt{3x-2x^2}+\left(x+1\right)\sqrt{3x+2}=0\)
giải pt a. \(9x+7=6\sqrt{8x+1}+4\sqrt{x+3}\)
b. \(\sqrt{\left(3x-3\right)\left(x+3\right)+16}+\sqrt{5\left(x-2\right)\left(x+4\right)+54}=-x^2+2x+4\)
Giải phương trình:
\(\sqrt{x+1}+\sqrt{x+3}+2\sqrt{\left(x-1\right)\left(x^2-3x+5\right)}=4-2x\)
Giải các phương trình :
a) \(2x^3-x^2+3x+6=0\)
b) \(x\left(x+1\right)\left(x+4\right)\left(x+5\right)=12\)
giải pt \(\frac{x^2+2x-8}{x^2-2x+3}=\left(x+1\right)\left(\sqrt{x+2}-2\right)\)
Giải pt: \(19x+\left(3-\sqrt{3-x}\right)\sqrt{3x+1}+\left(4x-25\right)\sqrt{3-x}=39\)
giải phương trình
a. \(\sqrt{x-1}+\sqrt{x+3}+2\sqrt{\left(x-1\right)\left(x^2-3x+5\right)}=4-2x\)
b.\(\sqrt{x-2010}+\sqrt{y-2011}+\sqrt{x+2012}=\frac{1}{2}\left(x+y+z\right)-300\)
Mình rút gọn như thế này đúng không nhỉ?
\(P=\left(2-\frac{\sqrt{x}-1}{2\sqrt{x}-3}\right):\left(\frac{6\sqrt{x}+1}{2x-\sqrt{x}-3}+\frac{\sqrt{x}}{\sqrt{x}+1}\right)\)
\(P=\left[\frac{2\left(2\sqrt{x}-3\right)}{2\sqrt{x}-3}-\frac{\sqrt{x}-1}{2\sqrt{x}-3}\right]:\left[\frac{6\sqrt{x}+1}{\left(\sqrt{x}+1\right)\left(2\sqrt{x}-3\right)}+\frac{\sqrt{x}\left(2\sqrt{x}-3\right)}{\left(\sqrt{x}+1\right)\left(2\sqrt{x}-3\right)}\right]\)
\(P=\left(\frac{4\sqrt{x}-6}{2\sqrt{x}-3}-\frac{\sqrt{x}-1}{2\sqrt{x}-3}\right):\left(\frac{6\sqrt{x}+1}{\left(\sqrt{x}+1\right)\left(2\sqrt{x}-3\right)}+\frac{2x-3\sqrt{x}}{\left(\sqrt{x}+1\right)\left(2\sqrt{x}-3\right)}\right)\)
\(P=\left(\frac{4\sqrt{x}-6-\sqrt{x}+1}{2\sqrt{x}-3}\right):\left(\frac{6\sqrt{x}+1+2x-3\sqrt{x}}{\left(\sqrt{x}+1\right)\left(2\sqrt{x}-3\right)}\right)\)
\(P=\frac{3\sqrt{x}-5}{2\sqrt{x}-3}:\frac{2x+3\sqrt{x}+1}{\left(\sqrt{x}+1\right)\left(2\sqrt{x}-3\right)}\)
\(P=\frac{3\sqrt{x}-5}{2\sqrt{x}-3}.\frac{\left(\sqrt{x}+1\right)\left(2\sqrt{x}-3\right)}{2x+3\sqrt{x}+1}\)
\(P=\left(3\sqrt{x}-5\right).\frac{\left(\sqrt{x}+1\right)}{2x+3\sqrt{x}+1}\)
\(P=\frac{3x+3\sqrt{x}-5\sqrt{x}-5}{2x+3\sqrt{x}+1}\)
\(P=\frac{3x-5\sqrt{x}-5}{2x+1}\)
Giải pt: \(4\sqrt{x+\sqrt{x^2-1}}=9\left(x-1\right)\sqrt{2x-2}\)
