49=4x^2/4

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Solution for 49=4x^2/4 equation: 


x in (-oo:+oo)

49 = (4*x^2)/4 // - (4*x^2)/4

49-((4*x^2)/4) = 0

49-x^2 = 0

-1*x^2 = -49 // : -1

x^2 = 49

x^2 = 49 // ^ 1/2

abs(x) = 7

x = 7 or x = -7

x in { 7, -7 }

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