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19 January, 16:26

25x^2+1=5 quadratic

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  1. 19 January, 16:31
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    25x² + 1 = 5

    25x² + 1 - 5 = 0

    25x² - 4 = 0 By difference of two squares

    (5x) ² - (2) ² = 0

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

    5x - 2 = 0 or 5x + 2 = 0

    5x = 0 + 2 5x = 0 - 2

    5x = 2 5x = - 2

    x = 2/5 x = - 2/5

    x = 0.4 x = - 0.4

    x = + 0.4 or - 0.4
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