$\int\frac{\sqrt{25w^2+4}}{w^4}dw$

$\lim_{x\to\infty}\left(\frac{x}{ye^{yx}}\right)$

$\int\left(2x^3cos\left(x^4\right)\right)dx$

$16+24a+36a$

$\sqrt{x}+\frac{1}{\sqrt{x}}=\sqrt{7}$

$\lim_{x\to1}\left(\frac{1-x^2}{x-1}\right)$

$x^2-12x+144$