$\int\frac{3}{\left(t+12\right)^3}dx$
$\int\left(2x\arcsec\left(x\right)\right)dx$
$\left[11x-9\right]>2$
$\int\left(\frac{1}{e^{2y}}\right)dy$
$\frac{3x^2-4}{x^1+1}$
$\frac{x^2-2xa}{b\sqrt{c}}+\frac{a-x}{\sqrt{c}}+\frac{-a+x}{\sqrt{b}}$
$x^2+6x=40$
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