Question

Help I don’t understand the first part but understand the second

Answer 1

Answer:

Complete the square:

• x² + 2x - 13 = 0
• x² + 2x + 1  - 14 = 0
• (x + 1)² - 14 = 0
• (x + 1)² = 14
• x + 1 = ± √14
• x = -1 ± 3.74
• x =  2.74, x = -4.74

Answer 2

Answer:

Step-by-step explanation:

Complete the square

$x^{2}$ + 2x - 13 = 0

$x^{2}$ + 2x        = 13

$x^{2}$ + 2x + $1^{2}$ = 13 +1 (take 1/2 of the b term , the 2 )

$x^{2}$ + 2x + 1 = 14

(x +1)^2 = 14