(a+b) (2a-3b+c) - c'2(a+b) *(1/c)
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Step-by-step explanation:
(a+b)(2a-3b+c)-(2a-3b)c
a(2a-3b+c) +b(2a-3b+c) -[ 2a(c) - 3b(c)]
2a2 - 3ab+ ac + 2ab - 3b2 +bc - 2ac + 3bc
=2a2 -ab -ac+4bc-3b2
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