v^2=49/81

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Solution for v^2=49/81 equation: 


v in (-oo:+oo)

v^2 = 49/81 // - 49/81

v^2-(49/81) = 0

v^2-49/81 = 0

1*v^2 = 49/81 // : 1

v^2 = 49/81

v^2 = 49/81 // ^ 1/2

abs(v) = 7/9

v = 7/9 or v = -7/9

v in { 7/9, -7/9 }

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