$\cos x+\cos y=1$
$\left(w^5m^3\right)^2$
$\left(\frac{3}{4}g+\frac{5}{2}\right)^3$
$x^2+1^2$
$2x^2-7.x^3-2x$
$\left(\frac{x}{5}\right)^4$
$-19+x>20$
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