Respuesta :

ghanami

Answer:

A. ( x + 2)²=9

Step-by-step explanation:

2x2 + 8x = 10  equivalent to :

x²+4x =5   ....(divid by2)

(x²+4x+4  ) - 4=5

(x +2)² - 4 = 5

(x +2)²  =9...(add 4)