$dy-\sin\:\left(x+y\right)dx=0$

$\int\:\left(2x+\frac{1}{2}\right)^2dx$

$880\cdot4$

$3xy^2-y^2=2x^2-2$

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

$\left(a\frac{1}{6}+3\frac{1}{10}b\frac{3}{4}\right)\left(a\frac{1}{6}-3\frac{1}{10}b\frac{3}{4}\right)$

$\left(\sqrt{x}+\sqrt{7}\right)^4$