$y=\frac{1}{2}x^2+8x+32\:;\:x=-6$
$-4\cdot8+10$
$f\left(x\right)=\frac{5x^2+25x}{-3x^2-21x-30}$
$\lim_{x\to0}\left(\frac{\sqrt{1+2x}-3}{\sqrt{x-2}\sqrt{2}}\right)$
$x^2inx$
$\left(15a+35b\right)^2$
$\left(-5m-4n\right)^2$
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