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27 March, 11:27

X2-4x+9=0 complete the square

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  1. 27 March, 13:24
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    (x-2) ^2=-5

    Step-by-step explanation:

    Given:

    x2-4x+9=0

    writing 9 as 4+5 also 4x as 2 (x) (2)

    x2-2 (x) (2) + 4 + 5 = 0

    x2-2 (x) (2) + (2) ^2 + 5 = 0

    As per (a-b) ^2 = a2-2ab+b2:

    (x-2) ^2+5=0

    (x-2) ^2=-5!
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