The factors of 1-81a2 are1) (1 + 9a)(1 - 9a)3) (a + 9)(a 9) – InterviewSolution

1.	The factors of 1-81a2 are1) (1 + 9a)(1 - 9a)3) (a + 9)(a 9)
Answer» 1-81a²using identity a²-b²= 1-(9a²) = (1-9a) (1+9a)

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