Mathematics, 24.05.2020 01:58, Thejollyhellhound20

What is the missing polynomial?
?-(20 - 4x – 5x2) = 20 – 7x2
4x-12x2
4x-2x2
40-4x-12x2
40-4x-2x2

Answers: 3

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What is the missing polynomial?
?-(20 - 4x – 5x2) = 20 – 7x2
4x-12x2
4x-2x2
...