$1+sinx=2cos^2x$
$4ma^2\cdot3m+a$
$a\:+\:c\:=r$
$\frac{df}{dx}=\ln\left(\sqrt{x^2+y^2+z^2}\right)$
$\int ax5dx$
$2\cos\left(x\right)^2-10=-\cos\left(x\right)-9$
$y^2-30y-365$
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