
Respuesta :
Answer:
Step-by-step explanation:
15 + c² = 96
c² = 96 - 15
c² = 81
c² = 9²
c = 9
x= -9, 9
you have to subtract 15
then u will get x^2= 81
square root on both sides
And u get 9
you have to subtract 15
then u will get x^2= 81
square root on both sides
And u get 9