Question

If the legs of a right triangle are given by x2 - y2 and 2xy, then which expression equals the hypotenuse? Choose all that apply.
x2 + y2
(x2 + y2)2
(x2 - y2)2 + (2xy)2

Answer 1

It would be the third choice

Answer 2

The square root of the third option would be correct.This is due to the fact that the Pythagorean Theorem is equal to a^2 + b^2 = c^2 and you would need to take the square root of c^2 to solve.