$\sin\left(x-270\right)=\cos\left(x\right)$

$2\log_a\left(x\right)+3\log_a\left(y\right)-\log_a\left(xy\right)$

$\frac{-7s^2+9s-1}{s^2\left(s-1\right)}$

$\int\frac{1}{\left(x^2+2x+1\right)\left(x+1\right)}dx$

$-8x+7<31$

$a^2-b^3^3$

$\lim_{x\to0}\left(\frac{5e^{2x}-5}{sin\left(x\right)}\right)$