Complete the square then write the expression as a squared binominal?

Question

a. xSquared - 12x

b. xSquared + 22x

c. xSquared +13x

hey first two answers are wrong

Answer 1

a.)
x^2 - 12x
x^2 - 12x + 36 = 36
(x - 6)^2 = 36
(x - 6)^2 - 36 = 0

b.)
x^2 + 22x
x^2 + 22x + 121 = 121
(x + 11)^2 = 121
(x + 11)^2 - 121 = 0

c.)
x^2 + 13x
x^2 + 13x + (169/4) = (169/4)
(x + (13/2))^2 = (169/4)
(x + (13/2))^2 - (169/4)) = 0

Answer 2

a. xSquared - 12x
x^2-12x+36-36
(x-6)^2-36


b. xSquared + 22x
x^2+22x+121-121
(x+11)^2-121


c. xSquared +13x
x^2+13x+42.25-42.25
(x+6.5)^2-42.25