$\frac{sin^2x-tan^2x}{tan^2xsin^2x}$
$\frac{2\pi}{\frac{\pi}{3}}$
$4\cos\left(z\right)^2=3$
$cx^5+bx^4+ax^3$
$-3x^4-4x^3+3x^2$
$3x\:+x\:+8$
$\left(x^3+1\right)x\left(2x^2+5\right)$
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