$2^{\left(x^2-2x\right)}=5$

$\int\left(\frac{x^2}{2x+3}\right)\cdot dx$

$40\:\cdot\:-70$

$\lim_{x\to0}\left(\frac{x+e^x}{x+_{e^{5x}}}\right)$

$\left(x^2\:-\:z^2\right)^3$

$\left(3a^2+4b\right)^3$

$\lim_{x\to0}\left(\frac{3tg^2\left(2x\right)}{x\sin\left(3x\right)}\right)$