## Answer :

x² - 2x - 2x + 4 = 49

x² - 4x = 45

x² - 2x = 45 + (- 2)²

x² - 2x = 45 + 4

(x - 2)² = 49

x - 2 = 7

x = 7 + 2, x = 9

x = - 7 + 2, x = - 5

Answer: 9 or the fifth choice. x is also - 5.

x² - 2x - 2x + 4 = 49

x² - 4x = 45

x² - 2x = 45 + (- 2)²

x² - 2x = 45 + 4

(x - 2)² = 49

x - 2 = 7

x = 7 + 2, x = 9

x = - 7 + 2, x = - 5

Answer: 9 or the fifth choice. x is also - 5.