Question 591295
the hypotenuse is the biggest


(x + 9)^2 + (x + 2)^2 = (x + 10)^2


x^2 + 18x + 81 + x^2 + 4x + 4 = x^2 + 20x + 100


x^2 + 2x - 15 = 0



remember, one of the solutions is extraneous (doesn't make sense)