$x-y-2x+3y$

$\sin\left(a+b\right)\sin\left(a+b\right)=\cos\left(b\right)^2-\cos\left(b\right)^2$

$\frac{d}{dx}\frac{-5}{x^2}+\frac{1}{5}$

$x^2-2x+35$

$\lim_{x\to0}\left(\frac{\left(1+x\right)^3-\left(1-x\right)^2}{x}\right)$

$4\left(x^2+5\right)$

$0.037+0.074+0.111+0.148+0.185+0.222+0.259+1.259$