Whoever answers this easy question first will be marked with the Brain thingy what is 4+5+5+4+8+7+9+1+3+6+7+4+5+4+9+1+4=< br /> BTW I know the answer so you have to get it right to get the brain thing too.

86 ._.

Step-by-step explanation:

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.