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9 December, 19:17

How many solutions does an equation of the form x^2 - k^2 = 0 have?

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  1. 9 December, 19:31
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    1. Use Difference of squares: a^2-b^2 = (a+b) (a-b)

    (x+k) (x-k) = 0

    2. Solve for x and k

    x=+-k

    k=+-x
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