ChernnellHeyI ChernnellHeyI

26-04-2016
Mathematics

contestada

Solve x^2 + 8x + 8 = 0 by completing the square.
Which equation is used in the process?
(x + 4)^2 = 0
(x + 4)^2 = 4
(x + 4)^2 = 8

Respuesta :

Panoyin Panoyin

26-04-2016

  x² + 8x + 8 = 0
  x² + 8x + 8 + 8 = 0 + 8
  x² + 8x + 16 = 8
  x² + 4x + 4x + 16 = 8
x(x) + x(4) + 4(x) + 4(4) = 8
x(x + 4) + 4(x + 4) = 8
  (x + 4)(x + 4) = 8
(x + 4)² = 8

The answer is C.

Answer Link

1013355 1013355

19-07-2018

The answer is C: (x + 4)2 = 8

Answer Link

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