Question

Plz help ill give brailest

Answer 1

`(4^(15) )/(b^(21) )`

Explanation:

First, multiply the exponent 7 and the -3 together, giving you:

`b^(-21)`

Then, multiply the exponent 5 and the -3 together, giving you:

`4^(-15)`

But since you can't have a negative exponent, you need to switch the numbers in their places. This is because, when you have a negative exponent, you either switch it to under 1 or over 1, depending on where it currently is:

`(4^(15) )/(b^(21) )`