$2log\left(\frac{y^6}{x}\right)+7log\left(y\right)-\frac{1}{2}log\left(x^4y^2\right)$

$\frac{3-x\left(x+2\right)}{54}$

$2x^3+x^2-5x+2$

$sin\left(x-30\right)=0.7$

$\left(at^2-bt\right)^2$

$\lim_{x\to\infty}\left(\frac{x^2+1}{x^2-3}\right)^{x^2}$

$\int\frac{\ln\left(x\right)}{2x^3}dx$