Question

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

Answer 1

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

Answer 2

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