What should be subtracted from 2p²-4p²+5p-6 to obtain p²-2 p+1
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Answer:
-3p^2+7p-7
2p^2-4p^2+5p-6 - x = p^2-2p+1
–2p^2–p^2+5p+2p–6–1=x
–3p^2+7p–7
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