$y+\sqrt{y^2-x^2}=ax^2b$
$\frac{d}{dx}arctan\:6x^7$
$\left(\frac{1}{7}y^{2a+1}-\frac{1}{4}y^{a+2}\right)^2$
$\left(2+\left(x^2+1\right)^4\right)^3$
$\:3x^2-4+6\:\:\:x^2$
$\frac{\left(cosx\right)}{1-sinx\:}=secx+tanx$
$x^2+10x+-25$
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