(m4-81)/(m-3)

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Solution for (m4-81)/(m-3) equation: 


D( m )

m-3 = 0

m-3 = 0

m-3 = 0

m-3 = 0 // + 3

m = 3

m in (-oo:3) U (3:+oo)

(m^4-81)/(m-3) = 0

1*m^4 = 81 // : 1

m^4 = 81

m^4 = 81 // ^ 1/4

abs(m) = 3

m = 3 or m = -3

m in { 3} 

m = -3

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