$\left(x+2\right)^2+2\left(x+2\right)-8$

$x\cdot y^'-y=1$

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

$\int_7^{14}x\left(\sqrt[2]{14x-x^2}\right)dx$

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

$\frac{7}{4x}\le7$

$\left(3xcosx\:+\:senx\:-3\right)dx+\:\left(2y-5\right)dy=0$