Answer:
x = [tex]\sqrt{141}[/tex]
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
x² + 22² = 25²
x² + 484 = 625 ( subtract 484 from both sides )
x² = 141 ( take square root of both sides )
x = [tex]\sqrt{141}[/tex]
