(1) X² - 2x – 13 = 0

A) X² - 2x = 13

B) 4x ^ 2 – 8x = 52

C) 4x ^ 2 – 8x + 4 = 56

D) √ (4x ^2-8x+4) = ± √ 56

E) 2x-2 = √ 56 then x = (2 + √56) / 2 = 1 + √14

F) 2x – 2 = - √56 then x = (2- √56) 2 = 1 + √14

A) X² - 2x = 13

B) 4x ^ 2 – 8x = 52

C) 4x ^ 2 – 8x + 4 = 56

D) √ (4x ^2-8x+4) = ± √ 56

E) 2x-2 = √ 56 then x = (2 + √56) / 2 = 1 + √14

F) 2x – 2 = - √56 then x = (2- √56) 2 = 1 + √14