Question

Complete the following sets of Pythagorean triples.

(3, x, 5)
(x, 12, 13)
(7, x, 25)
(8, 15, x)
(21, x, 29)

Answer 1

Just use \(a^2+b^2=c^2\) for each set \((a,b,c)\). For example, the first one, \(a=3, b=x, c=5, 3^2+x^2=5^2, 9+x^2=25, x^2=16, x=4\).