idontknow Dec 2015 972 128 Earth Jan 15, 2020 #2 \(\displaystyle 1+\dfrac{5x+20}{12+5x}-1=1+\dfrac{8}{12+5x}\). Now bring it to the form as \(\displaystyle \lim_{s\rightarrow \infty} (1+1/s)^s=e\).

\(\displaystyle 1+\dfrac{5x+20}{12+5x}-1=1+\dfrac{8}{12+5x}\). Now bring it to the form as \(\displaystyle \lim_{s\rightarrow \infty} (1+1/s)^s=e\).