$b^2+6b+9$
$3x+12x-25x-52x$
$\left(-104\right)-\left(-2\right)$
$sec\left(x\right)\left(1-sin^2\left(x\right)\right)$
$5\cdot3\cdot3$
$\left|468\right|$
$\left(2a^2-2b^2\right)$
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