$6m^2-m^2$
$\frac{5x-5}{x+1}=3$
$25x^4+139x^2y^2+81^4$
$\left(w^3m^{-3}\right)^4$
$solve\:\frac{4}{\sqrt{4}}$
$\sqrt{\frac{64}{16}}$
$\lim_{x\to0}\left(\frac{ln\left(x+1\right)-a\cdot sen\left(x\right)+sen\left(3x\right)}{x^2}\right)$
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