There are (49)5 ⋅ 40 books at the library. What is the total number of books at the library? 49 445 446 1

Haidbysksusnsjshusjh

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

Ive seen this before! the answer is b