Question

Solve for the exact value of x.

Answer 1

Use the a² + b² = c² formula

c = x
b = 5
a = 8 

(Note: C must always be the hypotenuse, however b and a are interchangeable)

a² + b² = c²
(8)² + (5)² = x²
64 + 25 = x²
x² = 89

square root both sides to isolate the x

x² = 89
√x² = √89
x = √89 or 9.43398

hope this helps

Answer 2

A² + b² = c²
5² + 8² = x²
x² = 25 + 64
x² = 89
x = √89
x = 9.43