7w/21w^2-35w

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Solution for 7w/21w^2-35w equation: 


w in (-oo:+oo)

((7*w)/21)*w^2-(35*w) = 0

((7*w)/21)*w^2-35*w = 0

1/3*w^3-35*w = 0

w*(1/3*w^2-35) = 0

1/3*w^2 = 35 // : 1/3

w^2 = 105

w^2 = 105 // ^ 1/2

abs(w) = 105^(1/2)

w = 105^(1/2) or w = -105^(1/2)

w = 0

w = 0

w in { 105^(1/2), -105^(1/2), 0 }

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