Respuesta :

Answer:

x = -1/5 = -0.5

Step-by-step explanation:

9(x + 5)2 = 81

Answer:

x = 19

Step-by-step explanation:

9x + 45 x 2 = 81

9x + 90 = 81

      +90   + 90

9x = 171

9       9

x = 19