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Find the product.
1. (5b) (b2 - 4b + 2) =
2. (2x) (2x2+x-4)=
3. (m+3) (2m-1) =
4. (C-3) (c2-2c + 3) = _
5. (2x + 1) (x2–5x+2) =.​