$sin^2x+\:sin^2x+tan^2x=tan^2x$
$6x^2+51x+81=9x^2+81x+153$
$x\ln9+x\ln12=x\ln16$
$xy'=x+\frac{1}{2}y$
$\left(5j-2\right)\left(7j+4\right)$
$3x^2+8x-14=0$
$6-2,\:48-1,\:2263$
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