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valina [46]
3 years ago
7

2+ – 2c+ – 9c^2 what is the answer

Mathematics
1 answer:
AlexFokin [52]3 years ago
3 0

Replace all occurrences of + − with a single − . A plus sign followed by a minus sign has the same mathematical meaning as a single minus sign because 1 ⋅ − 1 = − 1 2 − 2 c − 9 c 2

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2

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0

)

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0

,

−

3

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