$4+8\left(-8\right)$
$\left(4x^4.x^4\right)^3$
$s^2+1.6s+16$
$\left(14w^4\right)\left(14w^4\right)$
$\frac{2^{-2}+2^3}{5\cdot3^{-1}+-4^2}$
$1-cos\left(t\right)-2cos\left(t-\frac{b}{2}\right)-cos\left(t-b\right)$
$49m^6-64n^2$
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