$\left(81m^6\right)^{\frac{1}{2}}$

$\frac{3^2\:-\:x^2}{3+x}$

$\frac{dy}{dx}=\frac{4y}{x^2-1}$

$f\left(x\right)=\sqrt{\frac{x^2-3x+5}{x^2-5x+1}}$

$cos\left(x\right)cos^2\left(y\right)+cos\left(x\right)sin^2\left(y\right)=cos\left(x\right)$

$\int\sin\left(7x\right)\cos\left(11x\right)dx$

$\frac{10}{7}x^5-\frac{1}{63}x^5+\frac{1}{9}x^2+\frac{1}{8}x^2$