$4+5x+6$
$x^2-5x-10=0$
$\left(-2+a\right)^2$
$-5x^6+8x^4+7x^3-9x^2$
$\int_{5\pi}^{\infty}\left(cosx\right)dx$
$\left(\frac{1}{2}a^2\:-\:2b^3\right)^2$
$\left(\frac{a}{2}+5\right)\:.\:\left(\frac{a}{2}-5\right)$
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