$2x^3-7x^2-x+6$
$5\sec\left(2x\right)-10=0$
$14x^2+29x+15$
$32\cdot128$
$\frac{x+2}{\sqrt{x^2+2x-15}}$
$3\sec\left(2x\right)\cdot\frac{dy}{dx}=1$
$0,117\:a\:-\:0,35b\:-\:2,25b\:-\:1,1b\:+\:3,04a$
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