From the sum of 6b³-3b²+17b-9 and 9b³+13b³-8b-16,subtract 22b³+31b²-18b+25
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Answer:
6b-34b-50-10b
28b-3b-25-8b
22b+31b+25-18b
- - - +
6b-34b-50-10
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