$\left(-\frac{1}{5}\right)^{\frac{7}{3}}\left(\frac{1}{5}\right)^7$

$2\left(y\:-\:3\right)\:-\:4\left(x\:-\:2y\right)\:-\:\left(-3x\:-\:5\right)$

$\left(a^r\right)^2$

$4x^3+4x^2+y=0$

$\frac{\tan\:\left(\:\mu\:\:\right)\:\:+\cot\left(\rho\:\right)\:\:\:\:}{\tan\:\left(\mu\:\right)\:\:\cot\:\:\left(\rho\:\right)\:\:}=\:\tan\:\left(\rho\:\right)\:\:+\cot\:\left(\mu\:\right)\:\:$

$\frac{x^5-x^4+x^2-3}{x^2+1}$

$x^2+6x+c=13+c$