$\frac{1}{3}\left(a^2+2^2\right)^{\frac{3}{2}}+c$
$x\:+\:5\:\ge15$
$senx\:\left(cos^2x+csc^3x\right)$
$\cot^2\left(x\right)=11-\csc\left(x\right)$
$x\left(5y^3-2y^2\right)$
$sec\left(20\right)-tan20$
$\left(-6\right)+7-\left(-5\right)-2+8-6$
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