Respuesta :

Answer is c as x is 25/2

Answer:

c

Step-by-step explanation:

because x²+4=29 you can solve the equation for x²

x²+4=29

x²=25

substitute the value of x² into the expression x²-4 to calculate the value the expression is equal to

x²-4=25-4=21

c.21 is your answer

hope this works