$a=x^2+10x+25$
$-20x^6-40x^6$
$-155\:+\:-729$
$y=2x^2-x+3$
$4sen\left(x\right)cos\left(x\right)cos2x$
$\int_0^{\frac{\pi}{3}}12\left(x^2+2\right)\left(sen\:\left(2x^3+12x\right)\right)dx$
$-\frac{8}{4}a^2x-\frac{5}{6}a^2x-a^2x$
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