1.

1 ⁄ x-y − 1 ⁄ x + y is equal to

A. 2x ⁄ x² - y²
B. 2y ⁄ x² - y²
C. −2x ⁄ x² - y²
D. −2y ⁄ x² - y²
Answer» C. −2x ⁄ x² - y²


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