algebra

Factor 25x2-20x+4 I can't figure out what to do with 25.

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  1. I assume you mean
    25 x^2 - 20 x + 4
    factors of 25
    1,25
    5, 5
    factors of 4
    1,4
    2,2
    well 5*2 = 10 and two of those is 20
    so try
    (5 x - 2)(5 x - 2)

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