luvyamz
luvyamz
09-09-2019
Mathematics
contestada
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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