$\left(4x-2\right)\left(4x+5\right)$
$y'=-30x^2y+25y-42x^2+35$
$\int\left(9y\right)dx$
$\int_{\frac{\pi}{2}\:}^{2\pi\:}\left(sen3x\right)dx$
$x^2+157x-60$
$3x-4>5x-42$
$m^2+5m-14=0$
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