Question 200904: a^-1+b^-1 / a^2-b^2/ab
Answer by RAY100(1637)   (Show Source):
You can put this solution on YOUR website! a^-1b^-1 / a^2 -b^2 / ab
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please check to assure correct problem.
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(a^-1 *b^-1) / (a^2 -b^2) / (ab)
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as with fractions, invert and multiply instead of divide
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( a^-1 * b^-1) * ( ab) / (a^2 -b^2)
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a^-1 = 1/a,,,,,,b^-1 = 1/b
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( 1/ab) * (ab) / ( a^2 -b^2)
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1/ ( a^2 - b^2 )
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