$144b^4-120b^2c^2+25c^4$

$\left(x-8\:\right)\left(x-5\right)$

$( 4 a ^ { 2 } - 2 b ^ { 2 } + c ^ { 2 } ) ^ { 2 }$

$a\cdot\frac{2x}{5}+\frac{x}{10}=\frac{x}{15}+13$

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

$16^2+24a+9$

$\lim_{x\to0}\left(1-sin2x\right)^{\frac{1}{4x}}$