Question 1017531
a^2 + b^2 = c^2 where c is the hypotenuse
a = b+5
Now your equation is
(b+5)^2 + b^2 = 625
b^2 +10b +25 +b^2 = 625
2b^2 + 10b +25 = 625
2b^2 +10b -600= 0
b^2 +5b -300 = 0
b = -15,20
Obviously there's no negative in measurement so ignore the sign.  The sides are 15 and 20
15^2 + 20^2 = 25^2
225 + 400 = 625