b^2/7b-7

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Solution for b^2/7b-7 equation: 


b in (-oo:+oo)

b*((b^2)/7)-7 = 0

1/7*b^3 = 7 // : 1/7

b^3 = 49

b^3 = 49 // ^ 1/3

b = 49^(1/3)

b = 49^(1/3)

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