What must be subtracted from 3a2 - 3ab - 3b2 to get 4a? - 7ab - 4b2 + 1
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Step-by-step explanation:
=> (4ab - 7ab - 4b2 + 1) - (3a2 - 3ab - 3b2)
=> (4ab - 3ab) - (4b2 - 3b2) - 3a2 + 1
=> ab - b2 - 3a2 + 1
I hope this is the answer! Hope it helps you
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