September 2021 1 6 Report
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1)3a(a-2)-2a(a-3)
2)5b(b-c)+c(2b-c)
3)2a(3a-5)-(a-3)(a-7)
4 (c+3)(5-c)-3c(1-c)
5) (a-b)^2-a(a+2b)
6)4c(c-2)-(c-4)^2
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