$\int\cos\left(-x\right)dx$
$x^6\:-\:10\:x^4\:+\:25\:x^2$
$3+7+9+3+4$
$8a^3-1$
$160\pi+120\pi^3$
$17-2\left(x+1\right)=3\left(x+2\right)-4x$
$\int\frac{1}{x\left(9-5x\right)^2}dx$
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