simplify the expression

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x^-2 - 9y^-2/x^-1 + 3y^-1

May 4th, 2015

x^−2  − (9y^−2/x^−1 ) +  3y^- 1

=  −9x^3y+3x^2y^2+y^3/x^2y^3

= −9x^3+3x^2y+y2/x^2y^2


May 4th, 2015

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May 4th, 2015
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