$\int\left(\frac{\left(x+2\right)}{\left(4x+5\right)^2}\right)du$

$\int_0^1\left(3e^{-2x}\right)dx$

$\frac{dy}{dx}=\frac{7y^2}{\sqrt{x}}$

$\lim_{x\to\infty}x^2\left(1-cos\frac{1}{\sqrt{x}}-\frac{1}{2}tan\frac{1}{x}\right)$

$4x^55+2x-1$

$2x^2-x-x-2x+4$

$y^2+\frac{2y}{3}$