1.

 Simplify (x - 9)(x + 10) ⁄ (x² - 81)

A. (x + 10) ⁄ (x - 9)
B. (x + 10) ⁄ (x + 9)
C. (x² + x - 90) ⁄ (x² - 81)
D. None of above
Answer» C. (x² + x - 90) ⁄ (x² - 81)


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