What should be taken away from \[3{{x}^{2}}-4{{y}^{2}}+5xy+20\]to get \[-{{x}^{2}}-{{y}^{2}}+6xy-20?\]

\[2{{x}^{2}}-3{{y}^{2}}-xy+20\]

\[2{{x}^{2}}-5{{y}^{2}}+11xy+40\]

\[4{{x}^{2}}-3{{y}^{2}}-xy+40\]

\[4{{x}^{2}}-3{{y}^{2}}-11xy-40\]

What should be taken away from \[3{{x}^{2}}-4{{y}^{2}}+5xy+20\]to get

1.	What should be taken away from \[3{{x}^{2}}-4{{y}^{2}}+5xy+20\]to get \[-{{x}^{2}}-{{y}^{2}}+6xy-20?\]
A.	\[2{{x}^{2}}-5{{y}^{2}}+11xy+40\]
B.	\[4{{x}^{2}}-3{{y}^{2}}-xy+40\]
C.	\[2{{x}^{2}}-3{{y}^{2}}-xy+20\]
D.	\[4{{x}^{2}}-3{{y}^{2}}-11xy-40\]
Answer» C. \[2{{x}^{2}}-3{{y}^{2}}-xy+20\]

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What should be taken away from \[3{{x}^{2}}-4{{y}^{2}}+5xy+20\]to get \[-{{x}^{2}}-{{y}^{2}}+6xy-20?\]

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