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Question
Simplify: `(x^2 - 9y^2)/(x^3 - 27y^3)`.
Sum
Solution
`(x^2 - 9y^2)/(x^3 - 27y^3)`.
`= ((x + 3y)(x - 3y))/((x - 3y)(x^2 + 3xy + 9y^2))`
`= (x + 3y)/(x^2 + 3xy + 9y^2)`
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