40b^7-60b/20b

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Solution for 40b^7-60b/20b equation: 


b in (-oo:+oo)

40*b^7-(((60*b)/20)*b) = 0

40*b^7-3*b^2 = 0

40*b^7-3*b^2 = 0

b^2*(40*b^5-3) = 0

40*b^5 = 3 // : 40

b^5 = 3/40

b^5 = 3/40 // ^ 1/5

b = (3/40)^(1/5)

b^2 = 0

1*b^2 = 0 // : 1

b^2 = 0

b = 0

b in { (3/40)^(1/5), 0 }

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