$\left(\frac{3}{5}x+\frac{4}{9}y\right)\left(\frac{1}{5}x^2-\frac{2}{3}y\right)$

$6\int\left(4v^{2}+2v-2\right)\left(8v+2\right)dv$

$\int\left(x+2\right)\sqrt{x+1}dx$

$\left(x^2y^{-1}\right)\left(x^{-1}y^3\right)$

$-11m+6+3m-4x-15$

$\int\frac{x^2-64}{x^2+64}dx$

$\lim_{x\to\infty}\left(\frac{sin\left(x\right)}{2tan\left(x\right)}.\left(1+tan\left(2x\right)^{\frac{1}{4}}\right)\right)$