(7v^2-28v)/21v^3

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Solution for (7v^2-28v)/21v^3 equation: 


v in (-oo:+oo)

v^3*((7*v^2-(28*v))/21) = 0

v^3*((7*v^2-28*v)/21) = 0

(v^3*(7*v^2-28*v))/21 = 0

7*v^2-28*v = 0

7*v*(v-4) = 0

v-4 = 0 // + 4

v = 4

7*v*(v-4) = 0

(7*v*v^3*(v-4))/21 = 0

( 7*v )

7*v = 0 // : 7

v = 0

( v-4 )

v-4 = 0 // + 4

v = 4

( v^3 )

1*v^3 = 0 // : 1

v^3 = 0

v = 0

v in { 0, 4, 0 }

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