$-5\left(a-1\right)$
$m^3-m^2+2m-2$
$\left(a^4-7\right)\left(a^4+7\right)$
$1+2+3+4+5+6$
$\int_0^{\infty}\left(\frac{14}{x^2+4x+8}\right)dx$
$+7^2-3^2$
$20+7+20+12$
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