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6 February, 14:59

find the positive value of k that would make he left side of the equation a perfect square trinomial x^2-kx+64

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  1. 6 February, 15:12
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    Answer: 16

    Explanation:

    x² - kx + 64

    Since we are looking for a perfect square, then we need to take the square root of 64 to find the factors: √64 = 8

    So, the factors are: (x - 8) (x - 8)

    Foil (or distribute) to get: x² - 16x + 64 The k-value is 16
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