$\left(mx^2-3\right)^2$

$1+\sqrt{121}$

$\left(\frac{3}{2}x^{-\frac{1}{2}}+\frac{5}{3}x^{-\frac{1}{2}}\right)^4$

$\frac{d}{dx}3x^5\cdot\left(4x+8\right)^6$

$\ln\left(x+3\right)+\ln\left(x+13\right)+\ln\left(x+1\right)$

$\left(x+2m\right)^2-\left(x-2m\right)^2$

$\left(3-2x\right)\left(7-2x\right)$