$-7a\left(4b^2-9a^2-4ab\right)$
$\left(5x^3\:+\:4y\right)\left(2x^3\:+\:2y\right)$
$\left(3x^2\:+\:2\right)\left(2x^2+7\right)$
$6+v+45$
$x^2+18x+162$
$24\left(x-3\right)^2+36x^2\left(3-x\right)$
$-10+\left(-5-4\right)-\left(12-10\right)+100$
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