$\frac{1}{16}x^8-100m^4$

$\left(4a-4b+4c\right)\left(4a-4b+4c\right)$

$\lim_{x\to\infty}20x^{\frac{1}{20}}-20$

$\frac{\csc^2\left(x\right)-1}{\cos^2\left(x\right)}=\csc^2\left(x\right)$

$12\:-\:\left(-20\right)$

$\frac{-30x^2y^4-45x^2y^3z}{-15x^2y^3}$

$5\left(2^x\right)=3\left(7^{4x-4}\right)$