Question

if a^1/3+b^1/3+c^1/3=0,then

Answer 1

a^1/3+b^1/3+c^1/3=0

⇒ a^1/3+b^1/3 = - c^1/3

cubing on both sides

⇒ a + b + 3*a^(1/3)*b^(1/3)*(a^1/3+b^1/3) = - c

⇒ a+b+c = 3*a^(1/3) * b^(1/3) *c^(1/3)