How do I solve this quadratic function by finding square roots 2x²=200 ?

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  1. Set it to 0
    2x² - 200 = 0

    Factor out the 2
    2(x² - 100) = 0

    Use difference of squares
    2(x + 10)(x - 10) = 0

    Solve for x
    x = -/+ 10

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  2. Set the equation to 0 and solve for x.

    2x^2 = 200

    Divide both sides by 2.

    x^2 = 200/2

    x^2 = 100

    Take square root of both sides.

    x = positive 10 and negative 10

    Always a positive and negative answer in terms of square roots.


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