Question

integrate
$2y - \sqrt{ {r}^{2} - {y}^{2} }$

Answer 1

$y {}^{2} - y \div 2 |x + \sqrt{r { }^{2} - y {}^{2} } | + {r {}^{2} \div 2} {sin {}^{ - 1}y \div r }$
the above is your answer