Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = and the hypotenuse =

In order to make use of the formulas, you need a method for choosing x and y. Here, we will choose x=(11+1)/2 = 6 and y=(11-1)/2 = 5. Then
  a = 6^2 -5^2 = 36 -25 = 11
  b = 2(6)(5) = 60
  c = 6^2 +5^2 = 36 +25 = 61

The other leg = 60
and the hypotenuse = 61

The correct answer will be d. -4

The answer would be the second choice : )