$\frac{d}{dx}4x+6$
$x^2-17x+76$
$\left(-a\:senx-b\:cosx\right)+\left(a\:senx+b\:cosx\right)$
$m^2-2m-63=0$
$\left(mn+8a\right)^2$
$49a+14a+1$
$\frac{d}{dx}x^2+4y^2=36$
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