SOLUTION: how do you factor completely using rational numbers? 1/4 - u^2/81 Thank you!

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Question 292101: how do you factor completely using rational numbers?
1/4 - u^2/81
Thank you!
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
how do you factor completely using rational numbers?
1/4 - u^2/81
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(1/2 - u/9)(1/2 + u/9)
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Cheers,
Stan H.