$\left(1.02\right)^6+\left(1.02\right)^4$
$\left(2x+3y\right).\left(2x-1\right)$
$\int_0^{\pi}\left(7xcosx\right)dx$
$x^2=25$
$6\:cos^2c\:+\:cosx\:-\:7$
$9p^2-30p+25$
$4-3\cdot\left(-2\right)^2+1$
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