$64x^2-32x+16$

$\lim_{x\to\infty}\left(\frac{-5ln\left(x^5\right)}{-x^2-13x-9}\right)$

$x^2-\frac{1}{4}x+x^2-\frac{x}{4}$

$8+3x-3+8x$

$\left(\frac{1}{3}a^3b^3-2c^2\right)^3$

$\left(3xy^3+9x-4x^2\right)+\left(8x^2+4xy^3-x\right)$

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