SOLUTION: 49t^(2/3)+28^(1/3)=-4

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Question 979535: 49t^(2/3)+28^(1/3)=-4
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Substitute.
Let u=t%5E%281%2F3%29
Then,
49u%5E2%2B28u%2B4=0
%287u%2B2%29%5E2=0
7u%2B2=0
7u=-2
u=-2%2F7
t%5E%281%2F3%29=-2%2F7
t=%28-2%2F7%29%5E3
t=-8%2F343