$\frac{sen\:x}{csc\:x}\:+\:cos\:$
$csc^2\left(x\right)\cdot tan^3\left(x\right)$
$xydy=\left(1+y^2\right)dx$
$x^4+3x^3-2x^2-3x+1$
$24x^2+8x-2$
$-\left(-2\right)^3\left(-3\right)^3-\left(-4\right)^2$
$-3^2-\left(-3\right)$
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