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Mandarinka [93]
2 years ago
15

Idk how to do this and I need it in an hour

Mathematics
1 answer:
olchik [2.2K]2 years ago
4 0

Answer:

a) 2x^2+8-5x+-3x^2-4+7x\\\\= -1x^2+2x+4

b) 2x^2+8-5x--3x^2-4+7x\\\\= 5x^2+2x+4

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