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31 December, 09:10

What are the solutions of the equation x^2+4x+4=25

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  1. 31 December, 10:40
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    3 or - 7.

    This equation is solved by taking the number infront of x (in this case an invisible 1) and the last number (4) and multiplying

    4

    then split that up so that the two numbers equal the middle number when added and the last number when multiplies

    2 and 2

    now use the Double Bubbles

    (x + 2) (x + 2)

    This may be re-written as (x+2) 2 = 25.

    So x+2=±5.

    So x=3 or - 7.
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