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morpeh [17]
3 years ago
14

4x^2+12x+9-2x^2-7x-15

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
5 0
4x^2 + 12x + 9 - 2x^2 - 7x - 15

4x^2 - 2x^2 = 2x^2
12x - 7x = 5x
9 - 15 = -6

2x^2 + 5x - 6
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