$\sqrt{3x^ny^n}$

$4=\frac{2}{7}x$

$\int\left(6x^3\left(-3x^4+3\right)^6\right)dx$

$\int\frac{4x^2+x+8}{x\left(x^2+1\right)}dx$

$\left(z^2-w^2\right)=\left(w^2-z^2\right)$

$\frac{1}{2}\int_{\frac{-\pi}{4}}^{\frac{\pi}{4}}\left(4\sin\left(4x\right)^2\right)dx$