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20 February, 05:11

Determine the solution set of x^2-80=0.

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  1. 20 February, 07:07
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    X^2 - 80 = 0

    x^2 = 80 ... take the square root of both sides, eliminating the ^2

    x = (+-) sqrt 80

    x = (+-) sqrt 16 * 5

    x = (+-) 4 sqrt 5

    so x = 4 sqrt 5 or x = - 4 sqrt 5
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