$47-\left(-40\right)+\left(-3\right)$

$\frac{4x^3}{\left(1+x\right)^2}$

$-10x^2-11x^2$

$\lim_{x\to\infty}\left(\frac{x+2}{x^2+3}\right)$

$\int_1^0\left(sen\left(x+y\right)\right)dx$

$0.2819740503-\left(\frac{-0.99999682249\left(1.3-0.2819740503\right)}{12.78584918-12.78584918}\right)$

$8-4y-5y$