$6\sin^2\left(x\right)-7\cos\left(x\right)-1=0$
$2x+10\ge3x-3$
$\frac{1}{\left(x^2\cdot\sqrt{\left(9-x^2\right)}\right)}$
$\left(2\cdot z-9\cdot r\right)^3$
$\left(1-sen\:a\right)\left(1+tan^2a\right)$
$\frac{dy}{dx}=x^2\left(4y-2\right)$
$\left(343m^6+1n^3\right)$
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