Question

pls
$\frac{5x + 1}{2} + \frac{x + 1}{4} = \sqrt{5x} - \sqrt{45} \times + \sqrt{81}$
dau coroana și puncte ​

Answer 1

$\dfrac{5x+1}{2}+\dfrac{x+1}{4}=\sqrt5x-\sqrt{45}+\sqrt{81}|_{\cdot4} \Rightarrow 10x+2+x+1=4\sqrt5x-12\sqrt5+36 \Rightarrow\\ \\ \\ \Rightarrow x(11-4\sqrt5)=33-12\sqrt5 \Rightarrow x=3$