patterpuff patterpuff

18-12-2020
Mathematics

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Which of the following is the factored form of 9y2-121

Which of the following is the factored form of 9y2121 class=

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Pastel530 Pastel530

18-12-2020

It's the first one.

If you work backwords, I'd say it's easier. 3y swuared is 9y2, and 11 squared is 121. Then just keep the sign the same

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