$\lim_{x\to0}\left(\frac{\cos\left(\pi.x\right).\pi}{x}\right)$
$16x^2+16x+4$
$\left(2+6\cdot2+2-4\right)\cdot2$
$\log\left(x\right)^2-\log\left(25\right)=2$
$512+27c^3$
$\frac{d}{dx}\:\left(2x\right)\left(2x^3+1\right)$
$\left(-4x+3y-93\right)^2$
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