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

$25.32-23.03$

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

$\frac{x+3}{x+2}+\frac{x+4}{x+8}=2$

$\left(\frac{1}{2}x^3y^2-3-\frac{5}{3}x^4y^3+x^2\right)\left(\frac{3}{5}x^2y-4x\right)$

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

$-\frac{3}{4}=x^2-x$