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hodyreva [135]
3 years ago
14

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

Mathematics
1 answer:
lukranit [14]3 years ago
4 0
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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