Use the appropriate identity to rewrite the expression 8x® +64. A. (2x?) + (4)
B. (4x)2 +(8)
C. (2x) +(4)
D. (4x2)+(8)
SUBA

The correct answer is: 2

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.