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kogti [31]
3 years ago
6

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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