One of corner risers is shown at the right. Find the length of the shortest side of this riser. A right triangle with legs x and x+2. With a hypotenuse of x+4.

X^2 +(X^2 + 4 X + 4 ) = X^2 +8 X + 16 ??????

x^2 - 4 x - 12 = 0

(x-6)(x+2) = 0

x = 6