i need help with this math problem?

Question

Use the product property to simplify this expression

39^9 * 39^5 * 39^8

Note: Enter your answer as an exponential (with a base and an exponent)...do not use your calculator to approximate the number using scientific notation. For example, enter 2^5 instead of 32.
TIP

 

idk what its asking please help!

Answer 1

If you're familiar with multiplying variables together, then you recognize that:

x³ * x⁴ = x⁷

That is, the exponents add together provided the base is the same. All that's different in your case is that we know what the base number is: 39. That means we can add the exponents together:

9 + 5 + 8 = 22

So our final answer is 39²².