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5 July, 14:31

Find the value of c that makes the trinomial a perfect square.

x²+26x+c

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  1. 5 July, 15:15
    0
    c = 169

    Step-by-step explanation:

    To make the trinomial a perfect square

    add (half the coefficient of the x - term) ², that is

    x² + 2 (13) x + 13²

    = x² + 26x + 169

    = (x + 13) ² ← a perfect square
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