blossie706 blossie706

17-12-2021
SAT

contestada

Solve the equation 2x^2+8x-1=0 by completing the square.

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17-12-2021

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AhmedShukry2007 AhmedShukry2007

05-01-2022

Answer:

x = 0.12 or x = -4.12.

Explanation:

2x² + 8x - 1 = 0

2(x + 2)² - 9 = 0

2(x + 2)² = 9

(x + 2)² = 4.5

x = √4.5 - 2 or x = -√4.5 - 2

x = 0.12 or x = -4.12.

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