$\left(z^2-4\right)\left(z^2+5\right)$
$\left(2x\right)\left(9\right)^2$
$\cos\left(\arcsin\left(\frac{21}{29}\right)+\arccos\left(\frac{15}{17}\right)\right)$
$a^2-a+2$
$\left(3a^2\right)\left(-7\right)$
$4x^2+3y^2+32x-36y+124=0$
$3x+7y+8+4x+2y-10$
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