4) What must be subtracted from 3a2
- 6ab - 3b2
- 1 to get 4a2
- 7ab - 4b2 + 1?
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Answer:
3a2-6ab-3b2-1-A=4a2-7ab-4b2+1
3a2-6ab-3b2-1-4a2+7ab+4b2-1=A
-a2-ab-b2-2=A
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