1) what is 5\42 in lowest terms
2) what is 15\36 in lowest terms
3) what is 40\54 in lowest terms

1) 5/42 is just 5/42 since it can't be simplified into a whole # 2) 15/36 is 5/12 since 15/3=5 and 36/3=12 3) 40/54 is 20/27 because 40/2=20 and 54/2=27

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.