Question

X^2+2x+1=4 complete the square

Answer 1

`{x}^(2) +2 x + 1 = 4 \\ {(x + 1)}^(2) = 4 \\( x + 1) = + 2 \: and \: (x + 1) = - 2 \\ \boxed{x = 1 \: and \: x = - 3}`

x= 1 or x= -3 is the right answer.