Perform the indicated operations: -7
-1
-7
8R2 + R2
4
0
0
-1
5
4
0
0
Q
-2
10
b
88
110
5R3 R3
8
22
d
Q
b=0

It’s b because vpt is the whole triangle and ptc isn’t

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.