Question

From the sum of-b²– bc- c², 2b²+3 bc and
bc +20² Subtract the sum of
3b² – C² and -b² + bc+c²​

Answer 1

of-b²– bc- c², 2b²+3 bc and

bc +20² Subtract the sum of

3b² – C² and -b² + bc+c²

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