Question

what should be added to ab-a²-bc+b² to get 2a²+bc+c²?
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TELL ME FAST IT'S ARGENT
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Answer 1

you should subtracte 2a^2+bx+c^2

ab-a^2-bc+b^2-(2a^2+bc+c^2)

=ab-a^2-bc+b^2-2a^2-bc-c^2

=ab-a^2-c^2

hope this answer helped you