Is segment AB tangent to circle O shown in the diagram, for AB = 10, OB = 5, and AO = 14. Explain your reasoning and show all work in your own words. (The figure is not drawn to scale.) Thank you!

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.