Question

1 . What must be subtracted from a square + b square + c square - 3abc to get 2a square - b square - 3c + abc?
2. Subtract a cubic- 3a square from b cubic - 3b square

answer these two questions please ​

Answer 1

Answer:

a²+b²+c²-3abc-(2a²-b²-3c+abc)

=a²+b²+c²-3abc-2a²+b²+3c-abc

=-a²+2b²+c²+3c-4abc Ans.

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Answer 2

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