Asked by Almondjoy
Tracy has forgotten how to complete the square. Using the following problem show her how to complete the square: x^2 + 4x - 2 = 0
How do I do this?
How do I do this?
Answers
Answered by
oobleck
x^2 + 4x - 2 = 0
x^2 + 4x + 4 - 2 = 4
x^2 + 4x + 4 = 6
(x+2)^2 = 6
x+2 = ±√6
x = -2±√6
x^2 + 4x + 4 - 2 = 4
x^2 + 4x + 4 = 6
(x+2)^2 = 6
x+2 = ±√6
x = -2±√6
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