Question

4x2- 64 = 0
25x2 - 225 = 0​

Answer 1

Respuesta:

4x2- 64 = 0                         ​

x2-16 = 0                              

x2= 16

x = +/- 4

x = -4

x = 4

x1 = -4

x2= 4

25x2 - 225 = 0​

x2-9 = 0  

x2= 9

x = +/- 3

x = -3

x = 3

x1 = -3

x2= 3