Respuesta :

Answer:

4 and -6.

Step-by-step explanation:

x^2 + 2x = 24

When x = 4

4^2 + 2*4

= 16 + 8

= 24.

So it is true for x = 4.

When x = -6:

(-6)^2  + 2* -6

= 36 - 12

= 24.

So true for -6 also.