$15+w+w+w-3$
$120\frac{\pi}{180}$
$2^1.\:2^1$
$\sin^2x\left(1-\csc^2x\right)=-\cos^2x$
$x\left(a+1\right)-a-2$
$13+m>21$
$\int s^{\frac{1}{3}}sin\left(s^{\frac{4}{3}}-1\right)ds$
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