$7x^2+54x+124=4x^2+30x+79$
$5x^2-3x+8=0$
$\frac{3x^2+2x+8}{x+2}$
$3^4.\:3.^23^8$
$\left(987.554\right)\cdot\left(29\right)$
$\sec x\cdot\csc x\cdot\left(1-\cos^2x\right)=\tan x$
$x^2+3y^2=4$
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