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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
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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

User Nehir
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2 Answers

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

User Peter Stace
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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.
User Huanggh
by
7.9k points
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