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From -9dcd^2,subtract -2cd^2
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From -9dcd^2,subtract -2cd^2

User Boris Sokolov
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1 Answer

3 votes

-7cd²

1) Subtracting -2 cd² from -9cd² we have:

-9cd² - (-2cd²) A minus prior to the parentheses changes its sign

-9cd² + 2cd² Proceed with the operation

-7cd²

2) Hence, the answer is -7cd²

User McDonnellDean
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