$x^2+4x+4=49$
$y'\:=\:2xy\:+\:x$
$\frac{dx}{da}=2x-x^2$
$\int-4x^{-1}dx$
$xy+10=0$
$\left(2x+12\right)$
$4b^2+20bm+25m^2$
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