$\int9dn$

$\left(-48:12\right)^2-\left(\left(-22\right):\left(-11\right)\right)^2-\left(\left(-2\right)^2\right)^3+\left(-3\right)^0-\left(2\left(-5\right)\right)^2$

$8a^{x+2}b^{x-3}-25a^{x+2}b^x^{+2}$

$j^{6\:}x\:j^3x\:j^{-4}$

$x^2+25x+150$

$\int x\left[ln\left(1+x^2\:\right)+e^{\left(-x\right)}\:\right]dx$

$100m^2-40mn+2n^2$