$\lim_{x\to\infty}\left(\frac{5x-1}{x^2+1}\right)$

$p\left(2x-1\right)\left(3x^2\right)$

$-10\left(-5\right)+\left[-2+\left(-3\right)+5\left(-10\right)-2\right]$

$x\:+\:-10=15$

$\int_1^{\infty}\frac{\left(x^2+5x\right)}{\left(x^2+1\right)^{\left(\frac{3}{2}\right)}}dx$

$\left(\frac{3x^3+2x^2+5}{x^2}\right)$

$64x^2-10y^2$