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OpenStudy (anonymous):
Simplify the expression completely...
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OpenStudy (anonymous):
\[[(b/a) - (a/b)]\div[(1/a) - (1/b)]\]
OpenStudy (anonymous):
=((b^2-a^2)/ab )÷(b-a)/ab = = (b-a)(b+a)/ab × ab/(b-a) = (b+a)
OpenStudy (anonymous):
can you tell me what you did?
OpenStudy (anonymous):
i understand it now, thank you :)
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