Which of the following is equivalent to the quadratic equation below after completing the square? X^2+4x+1=10

Answer:
B
Step-by-step explanation:
Given
x² + 4x + 1 = 10 ( subtract 1 from both sides )
x² + 4x = 9
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(2)x + 4 = 9 + 4
(x + 2)² = 13 → B