$5x^4+38^3+20^2-6x+7$
$\left(-2a\right)\left(-4a^2b^3\right)^2$
$4x^2-4xy^2+y^4$
$\int_{\frac{1}{2}l}^l\left(11lx-12x^2\right)\left(\frac{w}{48}\right)\left(\:\left(l-x\right)\right)dx$
$x^2+12x+27>0$
$4sin\left(3x\right)=-0.25$
$\lim_{x\to-1}\left(\frac{8x^4+5x^3+7x+4}{x+1}\right)$
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