$5\left(1\right)^2-3\left(-2\right)$
$\left(2x+9\right)\left(2x+7\right)$
$a^2-29\cdot15$
$\int_0^2\left(z^2lnz\right)dz$
$9x^2\:-12xy$
$\left(-5\right).\left(-2\right).\left(-1\right)$
$\left(\frac{-7x^2-7}{\left(x^2-1\right)^2}\right)$
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