To determine

a) To find: The exact value of e2ln3

Explanation

We know that elnu=u and lnax=xlna

Therefore e2ln3=eln32=eln9=9

Final statement: e2ln3=9

To determine

b) To find: The exact value of log10(25)+log10(4)

Explanation

We know that log10(x)+log10(y)=log10(xy) and logax=xloga

Therefore

log10(25)+log10(4)=log10(25×4)=log10(100)=log10102=2log1010=2(1)=2

Final statement: log10(25)+log10(4)=2