$\left(d-6\right)^{\left(4\right)}\left(d+2\right)\left(d^{\left(2\right)}+7\right)\left(d-4\right)y=0$
$a^2-4a-32=0$
$\frac{9cosxcotx}{1-sinx}-9=9cscx$
$-41-\left(-15\right)$
$\left(3-2z\right)^4$
$\left(\frac{x+2}{\left(2+\sqrt{1x}\right)\left(\sqrt{4}-\sqrt{1x^2}\right)}\right)$
$\lim_{x\to3}\left(\frac{9x+6x^2+x^3}{x^3-9x}\right)$
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