Simplify the rational expression.

- 9x / x - x²

a. - 9 / x - 1

b. x / x - x²

c. 9 / x + 1

d. 9 / x - 1

we have - 9x / x - x²

so : - 9x / x(1 - x) = -9/(1 - x) = -9/ -(x - 1) = 9/(x - 1)

so the solution is d. 9/x - 1

good luck

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