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27-04-2019
Mathematics

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Solve the quadratic equation by completing the square 3x^2 -6x-4=0

Respuesta :

04-05-2019

Answer:

Step-by-step explanation:

3x² -6x-4=0

3(x² -2x) - 4 =0

3(x²-2x+1-1)-4 = 0 completing the square

3((x - 1 )² - 1 ) - 4 = 0

3(x -1 )² -3 - 4 = 0

(x - 1 )² = 7/3

x - 1 =√(7/3) or x - 1= - √(7/3)

x = 1+√(7/3) or x = 1-√(7/3)

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