$5x^3-2x^2+10x-4$
$\int-sen\left(5x\right)\cdot sen\left(cos\left(5x\right)\right)dx$
$-2\left(5b-2c\right)$
$\:5x+12\:con\:x=2$
$\ln\left(3\right)+\ln\left(x-1\right)=\ln\left(2\right)+\ln\left(x+1\right)$
$4-2\left(5+6\right)$
$\left(2-\frac{x}{4}\right)^n$
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