What is the missing polynomial? _ - (20 - 4x - 5x2) = 20 - 7x2

1.	What is the missing polynomial? _ - (20 - 4x - 5x2) = 20 - 7x2
Answer» What is the missing polynomial? _ - (20 - 4x - 5x²) = 20 - 7x² Solution:

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