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

Mathematics

2 answers:

grandymaker [24]3 years ago

6 0

Answer:

<u>Complete the square:</u>

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

Lunna [17]3 years ago

4 0

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

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