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11 September, 02:13

Rewrite the equation by completing the square.

x² + 4x = 0

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  1. 11 September, 06:03
    0
    (x+2) ^2 = 4

    Step-by-step explanation:

    x² + 4x = 0

    Take the coefficient of the x term

    4

    Divide by 2

    4/2 = 2

    Square it

    2^2 = 4

    Add this to each side

    x^2+4x+4 = 0+4

    (x+4/2) ^2 = 4

    (x+2) ^2 = 4
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