$\frac{3}{2}\:+\:\left(-\frac{5}{2}\right)\:+\:\left(-2\right)$
$x^2+x-110$
$\left(\sin\:^2\left(x\right)cos^2\left(x\right)\right)$
$f^2-7f-30$
$7\sin^2$
$\frac{5}{2x-2}=\frac{15}{x^2-1}$
$-16\left(-6\right)$
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