Solve x 2 - 8x + 3 = 0 by completing the square. Which equation is used in the process? A. (x - 4) 2 = 0 B. (x - 4) 2 = 11 C. (x - 4) 2 = 13 D. (x - 4) 2 = 19

Gruop x terms

(x²-8x) + 3=0

take 1/2 of linear coefient and square it

-8/2=-4, (-4) ^2=16

add negative and positive inside

(x²-8x+16-16) + 3=0

factor perfect square

((x-4) ²-16) + 3=0

expand

(x-4) ²-16+3=0

(x-4) ²-13=0

add 13 both sides

(x-4) ²=13

answer is C