$\left(3xy^2+3y^2\right)^2$

$\lim_{x\to2}\left(\frac{x^2+3x-10}{x+2}\right)$

$\frac{1^2+m^{2^2}}{1+m^2}$

$\frac{1}{5}+\frac{2}{5}+0.9$

$2^7\cdot2^{-2}$

$\left(3x^2-6x^2y^2-7xy\right)+\left(5x^2y^2-3x^2+7xy\right)$

$\lim_{x\to\frac{3\pi}{4}}\left(-2\sin2\left(x\right)\right)$