$\left(\frac{4}{5}m^3+\frac{1}{3}n^4\right)^2$

$-9<x-4$

$\int e^{-y}\left(3y^4-7y^3-2y^2+11\right)dy$

$\lim_{x\to-\infty}\left(\frac{\sqrt{49x^2+x}}{x}\right)$

$( x ^ { 2 } + a ^ { 2 } ) ( x ^ { 2 } - a ^ { 2 } )$

$\int12x^2+2xdx$

$\frac{5}{8}y^22z+0.25yz^22-\frac{4}{3}-\frac{5}{6}-\frac{7}{8}y^22y+\frac{1}{4}yz^22$