SOLUTION: how do you do the equation a^4=625 WITHOUT A CALCULATOR

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Question 770291: how do you do the equation a^4=625 WITHOUT A CALCULATOR
Found 2 solutions by tommyt3rd, Alan3354:
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
5*5*5*5=25*25=625
5^4=625
a^4=625
%0D%0Aa+=root%284%2C625%29=5%0D%0A

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
how do you do the equation a^4=625 WITHOUT A CALCULATOR
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I know it's 5, I just look at it.
"Solution by inspection"
OCO - obvious to the casual observer
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