Draw the line of reflection that reflects \triangle ABC△ABCtriangle, A, B, C onto \triangle A'B'C'△A ′
B
′
C
′
triangle, A, prime, B, prime, C, prime.

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.