Answer:
B
Step-by-step explanation:
Given
x² + 2x + 1 = 17
Note that the quadratic on the left side is a perfect square, that is
(x + 1)² = 17 ( take the square root of both sides )
x + 1 = ± [tex]\sqrt{17}[/tex] ( subtract 1 from both sides )
x = - 1 ± [tex]\sqrt{17}[/tex] → B
