$\int\frac{7x^2-3x+5}{x^3+x^2-2x}dx$

$\left(k+7^3\right)$

$\frac{2x}{x^2-5x}$

$\int_0^{\infty}\left(\frac{1}{x^3\sqrt{x^2+1}}\right)dx$

$\lim_{x\to\infty}\left(\left(x^3-7x^2\right)^{\frac{1}{3}}-x\right)$

$\lim_{x\to\infty}\left(1-\frac{3}{x-6}\right)^{4x}$

$j^2+16j=25$