What is the best way to solve this equation :
$\sqrt{9x-y^{2}}-\sqrt{y+3}-\sqrt{9x^{2}+y}=0$
What is the best way to solve this equation :
$\sqrt{9x-y^{2}}-\sqrt{y+3}-\sqrt{9x^{2}+y}=0$
You have an equation like $a-b-c=0$, which is equivalent to $a-b=c$. Then you take the squares $(a-b)^2=c^2$ and go on.