$\ln\sqrt{x+8}=7$
$36\:-\:16\:w\:-\:w^2\:=0$
$x ^ { 2 } y ^ { 9 } = 2$
$2xydx\:+\:\left(x^2\:-\:y^2\right)dy\:=\:0$
$-\left(2+10\right)^2$
$\left(-8\right)^{15}$
$4x^2-12x+8$
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