$1-cos^2\cdot1-sen$
$\left(2x-1\right)^2\left(\frac{3}{2}x+2\right)$
$\sqrt[6]{x^9}$
$\frac{x^2-4x+4}{3x^2-5x+3}$
$x^2-5x+2=0$
$\frac{y^2+3y-11}{y+5}$
$-3^3+6^2-2$
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