Aperezlopez0191 Aperezlopez0191

01-09-2020
Mathematics

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(9b−1)(9b+1) Me pueden ayudarme con esta otra pregunta Please.

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Аноним Аноним

01-09-2020

Answer:

Using identify (a+b)(a-b) =a²-b²

Ur answer is (9b-1)(9b+1) =81b²-1

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