$11.25x=945$

$\frac{\cot\left(x\right)+\sin\left(x\right)}{\cos\left(x\right)}=\csc\left(x\right)+\tan\left(x\right)$

$\log\left(\frac{\left(x^2-3x-4\right)}{\left(x^2+8x-9\right)}\right)$

$4.9\cdot10^6\cdot1.8\cdot10^3$

$g\left(t\right)=\ln\left(\sqrt{5t+1}\right)\left(t^3+4\right)^6$

$\sqrt[7]{5^7}$

$\left(3n^2\right)\left(4n^2-5n-1\right)$