Mathematics, 09.02.2021 14:00 prettydoll19

Which rational expression is undefined when a = 1 ? (6a ^ 2 - 6)/(7a + 7) (8a ^ 2)/(5a - 10) (10a + 6)/(- a ^ 2 + 1) (9a - 3)/(3a ^ 2) Please help

Which rational expression is undefined when a = 1 ? (6a ^ 2 - 6)/(7a + 7) (8a ^ 2)/(5a - 10) (10a +

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Which rational expression is undefined when a = 1 ? (6a ^ 2 - 6)/(7a + 7) (8a ^ 2)/(5a - 10) (10a +...

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