Question

plz answer fast plz pz

how much does a² -3 ab + 2 b² exceed from 2a² -7ab +9b²?​

Answer 1

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2a²-7ab+9b²-(a²-3ab+2b²)

=>2a²-7ab+9b²-a²+3ab-2b²

=>a²-4ab+7b²

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Answer 2

Answer:

-a^2 + 4ab - 7b^2.

Step-by-step explanation:

Just subtract