(a + b)(a - 2b+ 3c) - (2a - 3b).c
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Answer:
a^2-2b^2-ab+ac+6bc
Step-by-step explanation:
(a+b)(a-2b+3c)-(2a-3b)c
= a^2-2ab+3ac+ab-2b^2+3bc-2ac+3bc
=a^2-2b^2-ab+ac+6bc
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