Add the following polynomials, \[{{x}^{3}}-3{{x}^{2}}-6x+10\] and \[4{{x}^{3}}+10{{x}^{2}}+15x-20\]?

\[5{{x}^{3}}+7{{x}^{2}}-9x+10\]

\[5{{x}^{3}}+7{{x}^{2}}+9x-10\]

Add the following polynomials, \[{{x}^{3}}-3{{x}^{2}}-6x+10\] and \[4{

1.	Add the following polynomials, \[{{x}^{3}}-3{{x}^{2}}-6x+10\] and \[4{{x}^{3}}+10{{x}^{2}}+15x-20\]?
A.	\[5{{x}^{3}}+7{{x}^{2}}-9x+10\]
B.	\[5{{x}^{2}}+6+45x\]
C.	\[5{{x}^{3}}+7{{x}^{2}}+9x-10\]
D.	\[5x-3{{x}^{2}}+6\]
Answer» D. \[5x-3{{x}^{2}}+6\]