$\int\left(x+x^2\right)\cos\left(nx\right)dx$
$-9\:-7\:+6-1-2+4-1$
$\left(2a^x-1\right)\left(3a^x-5\right)$
$45s^2+18s+1=0$
$2x-y+2z=-8$
$x>16x+64$
$\log2m=3$
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