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OpenStudy (anonymous):
What is the factorization of a2b2 – 81? (ab – 9)(ab – 9) (ab – 9)(ab + 9) (ab2 – 9)(ab2 – 9) (ab2 – 9)(ab2 + 9)
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OpenStudy (anonymous):
@AlexandervonHumboldt2
OpenStudy (alexandervonhumboldt2):
(ab-9)*(ab+9) let me explain why
OpenStudy (alexandervonhumboldt2):
a^2-b^2=(a-b)*(a+b)
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