Please help me to solve the following:
How do you calculate the product of 2^2007 and 5^2000 ?
So we're looking for a common power, 2000 seems easy enough
1. by EQ1
2. by substitution
3. by EQ2
I don't know if you need it more than that, but simple properties of exponents should do the trick for you. You can find them with a simple google search (first result was this: Properties of Exponents - Chapter 6 Review: Section 1 which had the properties listed for you)