$\left(2t\right)\left(3t\right)\left(5t^2\right)$

$\int\left(\frac{5x+12}{\left(x^2-4\right)^{\frac{3}{2}}}\right)dx$

$\lim_{x\to0}\left(\frac{\left(4e^{\left(6-2x\right)}-x^2\right)}{\left(x+1\right)}\right)$

$3\cdot\left(3x\right)^2$

$xz+xy+x^2$

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

$\log_{11}\left(x^2+4x\right)=\log_{11}\left(5x+2\right)$