$\lim_{z\to i}\left(z+1\right)$
$\cot^2\left(x\right)\cdot\sec^2\left(x\right)-\cot^2\left(x\right)=1$
$x^3+125y^3$
$6\ln\left(6x+1\right)+10=-2$
$-1\left(p-8\right)\le-59$
$2\log\left(x-2\right)-log\left(x\right)=0$
$-5\frac{1}{2}+2\frac{3}{4}$
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