Question 587484
x, x+2, x+4

x^2 + (x+2)^2 = (x+4)^2 + 84

x^2 + x^2 + 4x + 4 = x^2 + 8x + 16 + 84

2x^2 + 4x + 4 = x^2 + 8x + 100

x^2 - 4x - 96 = 0

*[invoke quadratic "x", 1, -4, -96 ]

x = 12, -8

technically both {-8, -6, -4} AND {12, 14, 16} satisfy