$4+.250004+33.000452$
$\frac{d}{dx}15x=15y+5y^3+3y^5$
$\frac{m^7-n^7}{m^3-n^3}$
$\log\left(x^2+7\right)=\log\left(8x\right)$
$x^2+2x+c\:=\:c$
$15+\left(-4\right)-\left(-8\right)+\left(+9\right)-\left(-5\right)+\left(-45\right)$
$\frac{\csc^4y-1}{cot^2}=csc^2\:y+1$
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