$9\left(2x\:-\:4\right)+7x+5$
$\int7\sin\left(7x+9\right)dx$
$\frac{-5x^2-x^4+x^2-2}{x^2+1}$
$\int11x^2dx$
$\frac{-6x+4}{2}$
$x^4-16y^4$
$24x^2-30x+16$
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