a4+ b4+2a2b2 from 2a4-7b4-4a2b2
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6
Answer:
a4-8b4-6a2b2
Step-by-step explanation:
2a4-7b4-4a2b2-(a4+b4+2a2b2)
=2a4-7b4-4a2b2-a4-b4-2a2b2
=2a4-a4-7b4-b4-4a2b2-2a2b2
=a4-8b4-6a2b2
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1
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