$\int\frac{2x-1+x^2}{-2x+3x^2+2x^3}dx$
$\left(6\:+\:4x\right)\:.\:\left(6\:-\:4x\right)$
$3-sec^2\left(\theta\:\right)=0$
$\left(x^5+\frac{1}{2}\right)^2$
$-320+-16$
$64-y^4$
$\left(3a^2-5b^3\right)^2$
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