1, \(5√2x-7=5+2√2x \)
\(\Leftrightarrow\) \(5\sqrt{2x} -2\sqrt{2x}= 5+7\)
\(\Leftrightarrow\) \(3\sqrt{2x} = 12\)
\(\Leftrightarrow\) \(\sqrt{2x} = 4\)
\(\Leftrightarrow\) \(\sqrt{(2x)^2} = 4^2\)
\(\Leftrightarrow\) \(2x = 16 \)
\(\Leftrightarrow\) \(x=8\)
Tuan Dat bn ghi rõ phần 2 hộ mk mk giải cho nha
Giải PT:
a) \(\dfrac{1}{2}\sqrt{x-1}-\dfrac{3}{2}\sqrt{9x-9}+24\sqrt{\dfrac{x-1}{64}}=-17\)
b) \(\sqrt{18x-9}-0,5\sqrt{2x-1}+\dfrac{1}{2}\sqrt{25\left(2x-1\right)}+\sqrt{49\left(2x-1\right)}=24\)
c) \(\sqrt{36x-72}-15\sqrt{\dfrac{x-2}{25}}=4\left(5+\sqrt{x-2}\right)\)
d) \(\sqrt{\dfrac{1}{3x+2}}-\dfrac{1}{2}\sqrt{\dfrac{9}{3x+2}}+\sqrt{\dfrac{16}{3x+2}}-5\sqrt{\dfrac{1}{12x+8}}=1\)
e) \(\dfrac{1}{2}\sqrt{\dfrac{49x}{x+2}}-3\sqrt{\dfrac{x}{4x+8}}-\sqrt{\dfrac{x}{x+2}}-\sqrt{5}=0\)
Giải PT:
a) \(\sqrt{11+6\sqrt{2}}\) = \(\sqrt{2x^2-6x\sqrt{2}+9}\)
b) \(\sqrt{4x^2+4x\sqrt{7}+7}\) - \(\sqrt{8-2\sqrt{7}}\) = 0
c) \(\sqrt{x^2}\) = x
d) \(\sqrt{x^2-2x+1}\) = x-1
giải phương trình
a, \(\sqrt{4x-20}+3\sqrt{\dfrac{x-5}{9}}-\dfrac{1}{3}\sqrt{9x-45}=4\)
b, \(2x-x^2+\sqrt{6x^2-12x+7}=0\)
c, \(\dfrac{9x-7}{\sqrt{7x+5}}=\sqrt{7x+5}\)
\(\sqrt{8x-4}-12\sqrt{\dfrac{2x-1}{9}}+\sqrt{18x-9}=5\)
Bài 1 : giải phuơng trình:
a) \(2\sqrt{3}-\sqrt{4+x^2}=0\)
b) \(3\sqrt{2x}+5\sqrt{8x}-20-\sqrt{18x}=0\)
c) \(\sqrt{4\left(x+2\right)^2}=8\)
d) \(\sqrt{x-2}-3\sqrt{x^2-4}=0\)
e) \(\sqrt[3]{4x+1}=\sqrt[3]{-7}\)
Giải pt:
a)\(\sqrt{x^2+3x+2}+\sqrt{x^2+6x+5}=\sqrt{2x^2+9x+7}\)
b)\(\sqrt{2x+3}+\sqrt{x+1}=3x+2\sqrt{2x^2+5x+3}-2\)
Giải phương trình
\(\sqrt{x-2+\sqrt{2x+5}}+\sqrt{x+2+3\sqrt{2x-5}}=7\sqrt{2}\)
Giải phương trình:(Nhớ tìm điều kiện)
a) \(\sqrt{2x-1}=\sqrt{5}\)
b)\(\sqrt{x-5}\) = 3
c)\(\sqrt{4x^2+4x+1}=6\)
d)\(\sqrt{\left(x-3\right)^2}=3-x\)
e)\(\sqrt{2x+5}=\sqrt{1-x}\)
f)\(\sqrt{x^2-x}=\sqrt{3-x}\)
g)\(\sqrt{2x^2-3}=\sqrt{4x-3}\)
h)\(\sqrt{2x-5}=\sqrt{x-3}\)
i)\(\sqrt{x^2-x+6}=\sqrt{x^2+3}\)
giải phương trình
\(9+3\sqrt{x\left(3-2x\right)}=7\sqrt{x}+5\sqrt{3-2x}\)
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