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24-04-2020
Mathematics

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Solve the following quadratic equations by completing the square.
a. x^2+ 6x + 7 = 0

Respuesta :

24-04-2020

Answer:

x=-3±[tex]\sqrt{2}[/tex]

Step-by-step explanation:

x^2+6x=-7

x^2+6x+9=-7+9

(x+3)^2=2

x+3=±[tex]\sqrt{2}[/tex]

x=-3±[tex]\sqrt{2}[/tex]

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