$log\left(x^2-9\right)-\log\left(x-3\right)=\log\left(3\right)+\log\left(2x\right)$

$x^2\:=225$

$e^{x^2}-e^y=x$

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

$z^2-3z+\frac{9}{4}=\frac{27}{4}$

$\frac{2\sin\left(x\right)+\sin\left(2x\right)}{2\sin\left(x\right)-\sin\left(2x\right)}=1$

$-3m^2-5m+4=2$