What is the value of y^2-x^2y 2
−x
2
y, squared, minus, x, squared when y=6y=6y, equals, 6 and x=5x=5x, equals, 5?

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.