Các câu hỏi tương tự
Tìm x,tính nhanh:
a.\(2x^2+5x+8+\sqrt{x}=x^2+3x+35+x^2+2x-7.\)
b.\(3\sqrt{x}+7x+5=\sqrt{x}+4x-6+3x+18\)
c.\(8\sqrt{x}+2x-9=5x+7+6\sqrt{x}-3x-12\)
d.\(2\sqrt{3x}+11x-18=5x+3+6\sqrt{3x}+6x-21\)
Bài 1 : Tìm x biết :
2( x - \(\sqrt{12}\))2 = 6
2x - \(\sqrt{x}\)= 0
\(|2x+\sqrt{\frac{9}{16}}|-x=\left(\frac{1}{\sqrt{2}}\right)^2\)
Bài 2 : Cho \(A=\frac{2\sqrt{x}+3}{\sqrt{x}-2}\). Tìm x khi A là số nguyên .
tìm x biết:
a)\(2x^2+5x+8+\sqrt{x}=x^2+3x+35+x^2+2x-7\)
b)\(3\sqrt{x}+7x+5=\sqrt{x}+4x-6+3x+18\)
c)\(8\sqrt{x}+2x-9=5x+7+6\sqrt{x}-3x-12\)
d)\(2\sqrt{3x}+11x-18=5x+3+6\sqrt{3x}+6x-21\)
\(x^2+5x+6=3x+3\cdot4+2x-9\)
\(2\sqrt{x}+8x+5=5x-4+3x+19\)
\(5\sqrt{x}+2x-8=5x+4-3x-19\)
\(2x^2+5z+8+\sqrt{x}=x^2+3x+35+x^2+2x-7\)
\(3\sqrt{x}+7x+5=\sqrt{x}+4x-6+3x+18\)
\(2\sqrt{3x}+11x-18=5x+2+6\cdot\sqrt{3x}+6x-21\)
a)22+2x+3=144
b)(\(\sqrt{9}+\sqrt{4}\)).\(\sqrt{x}\)=10
c)(x+\(\dfrac{1}{2}\))2=\(\dfrac{4}{25}\)
\(2x=\sqrt{3+\frac{1}{2}\sqrt{3+\frac{1}{2}\sqrt{3+\frac{1}{2}\sqrt{x+3}}}}\)
Tìm x biết : \(\frac{2x+2\sqrt{x}+2}{\sqrt{x}}=7\)
Tìm x biết
-2\(\sqrt{X^2+1}=-8\)
4+ 3\(\sqrt{x^2+2=4}\)
\(\sqrt{x+1}\)= 3
-5\(\sqrt{2x^2-3}=-15\)
Tìm x biết:
a)\(\left|\sqrt{2}-x\right|=\sqrt{2}\)
b)\(\left|x-1\right|=\sqrt{3}+2\)
c)\(\left|1-2x\right|=\sqrt{5}-1\)
d)\(\left|1-x\right|=\sqrt{2}-0,\left(1\right)\)
e)\(\left|x-\sqrt{3}\right|=\sqrt{3}-1\)
f)\(\left|x-\sqrt{2}\right|=1,\left(4\right)\)