Question 133099
X^2+(X+3)^2=(X+6)^2
X^2+X^2+6X+9=X^2+12X+36
X^2-6X-27=0
(X-9)(X+3)=0
X-9=0
X=9 ANSWER FOR THE SHORTEST SIDE.
9+3=12 FOR THE LONGER SIDE
9+6=15 FOR THE HYPOTENUSE.
PROOF:
9^2+12^2=15^2
81+144=225
225=225