$3x+5x^2+x\cdot2x$
$\frac{senx+cosx}{cosx}=1+cotgx$
$2sec\left(\frac{\pi\:}{4}\right)+4cot\left(\frac{\pi\:}{3}\right)$
$3\left(1\right)^{\frac{4}{3}}$
$25z^2+30z+9$
$\frac{\left(1+cosx\right)}{\left(1+secs\right)}$
$4x^{2}+72xy+54y^{2}$
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