What is the value of x??

C) square root of 12

Step-by-step explanation:

A^2+b^2=c^2

A=2

B=?

C=4

2^2=4

4^2=16

4+b^2=16

Subtract 4

B^2=12

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.