What must be added to \[{{x}^{3}}+3x-8\] to get \[3{{x}^{3}}+{{x}^{2}} – McqOptions

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1.	What must be added to \[{{x}^{3}}+3x-8\] to get \[3{{x}^{3}}+{{x}^{2}}+6\]?
A.	\[2{{x}^{3}}+{{x}^{2}}-3x+14\]
B.	\[2{{x}^{2}}+{{x}^{2}}+14\]
C.	\[2{{x}^{3}}+{{x}^{2}}-6x-14\]
D.	\[-2{{x}^{3}}-{{x}^{2}}+6x-14\]
Answer» B. \[2{{x}^{2}}+{{x}^{2}}+14\]

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