$\lim_{x\to0}\left(\frac{\left(sec^2x\right)-1}{3x^2}\right)$
$8x^3-24x^2+24x-8$
$4\cdot10^6+8\cdot10^3+4$
$y=\frac{2x^3}{x^2+x}$
$\int\left(\frac{3x^3+4x^2-5x}{2}\right)dx$
$3\sin x\cos x=1$
$\left(x^a+y^b\right)\left(x^a-y^b\right)$
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