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30 June, 16:40

What is (x-4) ^2=28 when solved as a quadratic equation such as - 4+-2 square 7

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  1. 30 June, 19:10
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    Solve for x: (x - 4) ^2 = 28

    Take the square root of both sides:x - 4 = 2 sqrt (7) or x - 4 = - 2 sqrt (7)

    Add 4 to both sides:x = 4 + 2 sqrt (7) or x - 4 = - 2 sqrt (7)

    Add 4 to both sides:Answer: x = 4 + 2 sqrt (7) or x = 4 - 2 sqrt (7)
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