$\left(-5-5\right)\left(-5\right)-1$
$22+25.50$
$a^2+21a+20$
$y=\ln\left(30-x-x^2\right)$
$p\left(x\right)=x^3+x^4-4x^3+6x^2+x-7$
$\lim_{x\to\infty}\left(\sqrt{\frac{\left(2n+1\right)}{n+1}}\right)$
$cot^2\:a\:+\:1\:=\:csc^2\:a$
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