$9x^2-6x+25$
$\left(\frac{1}{2}a^2+\frac{1}{2}a-\frac{1}{12}\right)-\left(\frac{1}{6}a^2+\frac{1}{3}a\right)+\left(\frac{1}{6}a-\frac{1}{4}\right)$
$\frac{dr}{dq}=100\sqrt{q}+20q$
$\left(5x^2\right)^3+9\left(5x^2\right)^2+3\cdot5x^2\left(-3\right)^2+\left(-3\right)^3$
$\left(45\right)\left(-3\right)$
$\frac{\sin2a-\cos2a+1}{\sin2a+\cos2a+1}=\tan a$
$\int_2^{\tan}\left(\frac{1}{1+\:t^2}\right)dx$
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