$\frac{72}{\left(-3\right)}$

$\sqrt{\frac{3^{\times\:+1}+3^{\times\:+3}}{3^{\times\:}+3^{x+1}}}$

$\frac{-52}{-52}$

$10a^2+10-20$

$\int\left(x^3\cdot sin\left(8x^4\right)\right)dx$

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

$-\csc^22x$