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kati45 [8]
3 years ago
11

5x4 – 7x3 – 5x2 + 5x + 1 = 0

Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
5 0
20 - 21 - 10 + 5x +1= 0
5x = 10
x = 2
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