$y^2\:-\:y\:+\:6$
$x^2-7x=-12$
$1-\sin^22x=4\cos^4-4\cos^2x+1$
$x^2-121<0$
$7-3\cdot2$
$\int_0^{+\infty}\frac{4}{e^x}\:dx$
$4+3x<13$
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