Answer:
72
Step-by-step explanation:
multiply by 16
It appears like the 3 was distributed through the parenthesis
A
C) 17
Using the rule
A^2 + B^2 = C^2
8^2 + 15^2 = x^2
64 + 225 = x^2
x^2 = 289
x= _/-289
x = 17
