$y+2=2-y$

$\sqrt{5}-5\sqrt{5}+7\sqrt{5}-4\sqrt{5}+\sqrt{5}$

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

$\sin^2\:x\:+\cos^2\:xsin\:2\:x+cos\:2\:x$

$\int\left(\frac{1}{9x+2}\right)dx$

$8\left(-10x+3.5y-7\right)$

$\left(2\frac{1}{2}+3\frac{2}{3}+4\frac{1}{4}\right)\left(8\frac{1}{4}+6\frac{2}{3}-4\frac{1}{2}\right)\left(9\frac{2}{3}+20\frac{1}{4}\right)$