$3a\frac{2}{3}a\frac{4}{3}$
$\frac{\tan\left(x\right)+3\sin\left(x\right)+2}{\tan\left(x\right)-3\sin\left(x\right)+1}=2$
$y'=\left(cos^2xsen2x\right)$
$8x^3-15x^2+9-x^3+20x^2-3x-5$
$6+\left(-8\right)-\left(-14\right)$
$3x^2-745x=-9842$
$\left(-23\right).\left(-5\right)$
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