$10a^2+30a+40=a^2-6a+4$
$\left(\frac{1}{2}senx+\frac{1}{2}senx\right)$
$\int_0^22\pi x\sqrt{x-3}dx$
$4x^2+8c+8$
$\lim_{x\to2}\:\frac{x^3-7x+6}{x^3+x^2-4x-4}$
$\left(x-3\right)^2+5=0$
$p^2+6p+7$
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