$y\left(y+2\right)\:-\:4y^3$
$\int\sqrt{25x^2+9}dx$
$\frac{1-tan^2x}{2}=\frac{cos2x}{1+cos2x}$
$\left(5^4\right)^3\:$
$x^2+8x+4$
$-29\cdot7$
$\int\frac{48x^2}{\left(x-9\right)\left(x+3\right)^2}dx$
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