\(\sqrt{4x-20}+3\sqrt{\dfrac{x-5}{9}}-\dfrac{1}{3}\sqrt{9x-45}=4\)giải hộ mik pt này
Giải pt:\(\sqrt{x}+\sqrt{9-x}=\sqrt{-x^2+9x+9}\)
Giải pt \(3\sqrt{5x-1}-9\sqrt{9x+7}=2\sqrt{x+2}\)
giúp vs ạ!!!!!!!!!!!!!!!!!!!!
2. Giải PT:
a) \(\frac{9x-7}{\sqrt{7x+5}}=\sqrt{7x+5}.\)
b) \(\sqrt{4x-20}+3\sqrt{\frac{x-5}{9}}-\frac{1}{3}\sqrt{9x-45}=4.\)
c) \(2x-x^2+\sqrt{6x^2-12x+7}=0.\)
d) \(\left(x+1\right)\left(x+4\right)-3\sqrt{x^2+5x+2}=6.\)
Giải PT
\(\sqrt{4x-20}-3\sqrt{\frac{x-5}{9}}=\sqrt{1-x}\)
\(\sqrt{4x+8}+2\sqrt{x+2}-\sqrt{9x+18}=1\)
\(\sqrt{3x^2-4x+3}=1-2x\)
\(\sqrt{16\left(x+1\right)}-\sqrt{9\left(x+1\right)}=4\)
giải pt sau:
\(\sqrt{4x+4}+\sqrt{9x+9}=5\sqrt{2}\)
Giải pt sau:
a)\(3\sqrt{x}-2\sqrt{9x}+\sqrt{16x}=5\)
b)\(\sqrt{x^2+5}=x+1\)
c)\(\left(5-\sqrt{x}\right)\left(9-\sqrt{x}\right)=x-11\)
Ai giúp mik vs :((
Giải các pt sau ( tìm ĐK)
a)\(4\sqrt{x-5}-\sqrt{4x-20}+\sqrt{16x-80}=2\)\(=2\)
b) \(2\sqrt{x-1}+\sqrt{4x-4}-\sqrt{9x-9}=2\)
c)\(-\sqrt{x+2}-\sqrt{4x+8}-\sqrt{9x+18}=-\sqrt{x+5}\)
2) giải pt
3) \(\sqrt{4x+1}=x+1\)
4) \(2\sqrt{x-1}+\dfrac{1}{3}\sqrt{9x-9}=15\)
5) \(\sqrt{4x^2-12x+9}=7\)
6) \(5\sqrt{9x-9}-\sqrt{4x-4}-\sqrt{x-1}=36\)
giúp mk vs ah
