Question

Use the polynomial identity to determine which values of x and y generate the values of the sides of the following right triangle.

x = 8, y = 3
x = 3, y = 8
x = 6, y = 4
x = 4, y = 6

Answer 1

x^2 = 73 - y^2


x^2 - y^2 = 55
substituting in to it
73 - 55 = 2y^2
18 = 2y^2
y = 3
x^2 - 73 - 9
x = 8

answer is A