$\left(3x^2\:-\:5x\:+\:4\right)\:+\:\left(7x^2\:-\:5x\:-\:5\right)$
$m^2-8m+25$
$0,01\cdot11$
$\sqrt[2]{x^{2m}}$
$9x+3>12$
$x\left(x-3\right)>3x$
$9x^2+18x+17$
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