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22 February, 07:19

solve n^2 + 3n - 12 = 6 using quadratic equation by completing the square and describe in detail each step

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  1. 22 February, 07:29
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    n = 3, - 6

    Step-by-step explanation:

    n ^2 + 3 n - 12 = 6.

    Subtract 6 from both sides.

    n ^2 + 3 n - 12 - 6 = 6 - 6

    n^ 2 + 3 n - 18 = 0

    ⇒ (n + 6) (n - 3) = 0

    ∴ n = - 6, 3
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