$\lim_{x\to7}\left(\frac{24}{b+1}\right)-\left(b-4\right)^2$

$\sqrt{a^2+a^4+a^6}$

$\left(\frac{4m^{11}n^9}{12m^7n^{13}}\right)$

$2y^{\left[2\right]}e^{\left[\left(xy\right)^{\left[2\right]}\right]}+4xye^{\left[\left(xy\right)^{\left[2\right]}\right]}$

$\int\cos^5\left(3x\right)\sin^5\left(3x\right)dx$

$\frac{d}{dx}y=\sin4x^2$