\(\Leftrightarrow5\sqrt{x}=10\)
\(\Leftrightarrow\sqrt{x}=2\)
\(\Leftrightarrow x=4\)
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tìm x biết
a, \(\sqrt{(x+3)^2}\)=12
b, \(\sqrt{25x-25}-\sqrt{9x-9}\)=10
Tìm x, biết
a) \(\sqrt{9x^2}\)=12
b) \(\sqrt{25x^2}\)=\(\left|-50\right|\)
Tìm x biết
\(\sqrt{64x+64}-\sqrt{25x+25}+\sqrt{4x+4}=20\)
Tìm Min:
a) y= \(\sqrt{x^2+6x+10}\) - 3
b) y= \(\sqrt{\frac{x^2}{9}+2x+10}\)
c) y= \(\frac{-3}{\sqrt{\frac{x^2}{8}-2x+17}}\)
d) y= \(\sqrt{4x^4-4x^2\left(x+1\right)+\left(x+1\right)^2+9}\)
e) y= \(\sqrt{25x^2-20x+4}\)+ \(\sqrt{25x^2}\)
Tìm x biết
2,\(\frac{1}{5}\sqrt{25x+50}-5\sqrt{x+2}+\sqrt{9x+18}+9=0\)
3,\(\sqrt{x^2-4x+4}=7x-1\)
Tìm x biết:
a) \(\sqrt{25x^2-10x+1}=x+2\)
b) \(\sqrt{4x^2+12x+9}=7\)
Tìm x biết:
\(\sqrt{25x^2}\)= 3
Tìm x, biết:
a, \(\sqrt{4x+20}-3\sqrt{5+x}+\frac{4}{3}\sqrt{9x+45}=6\)
b, \(\sqrt{25x-25}-\frac{15}{2}\sqrt{\frac{x-1}{9}}=6+\sqrt{x-1}\)
tìm x biết
a)\(\frac{3\sqrt{x}-5}{2}-\frac{2\sqrt{x}-7}{3}+1=\sqrt{x}\)
b)\(\sqrt{9x^2+45}-\frac{1}{12}\sqrt{16x^2+80}+3\sqrt{\frac{x^2+5}{16}}-\frac{1}{4}\sqrt{\frac{25x^2+125}{9}}=9\)