$\int\frac{1-senx}{1-sen^2x}dx$
$12x^4+32x^3-5x^2-29x-10$
$-3x<\left(-3\right)$
$n^2-14n+7$
$-1x-22$
$18.6\cdot3$
$7-x^2-\:x\:para\:x=-2$
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