I need help with this inequality:
$\sqrt x +\sqrt{x+7} + 2\sqrt{x^2+7x} <35-2x$
It doesn't seem solvable. All roots of the corresponding equation are irrational.
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Sign up to join this communityI need help with this inequality:
$\sqrt x +\sqrt{x+7} + 2\sqrt{x^2+7x} <35-2x$
It doesn't seem solvable. All roots of the corresponding equation are irrational.
Let $a=\sqrt{x}+\sqrt{x+7}$, then $a+a^2<42$, and $-7<a<6$