(vi) 3abc - a? – b2 from c2 + 2a? – b2 + abc
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Answer:
hhhyhyyghby9vg7cd5z5x8v kgu7foc86r 6 6if6556t997tc96t9f f9f 9 6f9
Explanation:
luv lgu u gc7ggo7t7g77t7t97tcct7t7t9ty97t7t7t7t7tcf7
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