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Galina-37 [17]
3 years ago
11

P= -4b^2 +6b - 9

Mathematics
1 answer:
Ksivusya [100]3 years ago
8 0

Answer:

Step-by-step explanation:

-4b^2+6b-9-(7b^2-2b-5)=

-4b^2+6b-5-7b^2+2b+5=

-11b^2+8b-4

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