$\frac{dy}{dx}=\frac{-sen2x+2xy^2}{2y\left(1-x^2\right)}$
$f\left(x\right)=10+12x^2-3x^2-2x^3$
$\int\left(x^3cos\right)\left(x^4+2\right)dx$
$\frac{1}{3^n}x^n$
$-\frac{9}{5}u-6\le-15$
$\left(x-5\right)\left|x^2+5x+25\right|$
$\left(7x\right)^2$
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