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09-09-2019
Mathematics

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What is the solution set of 4x2 - 36 = 0?

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harpazo harpazo

09-09-2019

4x^2 - 36 = 0

4x^2 = 36

x^2 = 36/4

x^2 = 9

sqrt{x^2} = sqrt{9}

x = - 3 and x = 3

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