1.

The product of \[({{x}^{2}}+3x+5)\] and \[({{X}^{2}}-1)\] is______.

A. \[{{x}^{4}}+3{{x}^{3}}-4{{x}^{2}}-3x-5\]
B. \[{{x}^{4}}+3{{x}^{3}}+4{{x}^{2}}-3x-5\]
C. \[{{x}^{4}}+3{{x}^{3}}+4{{x}^{2}}+3x-5\]
D. \[{{x}^{4}}+{{x}^{3}}+x+5\]
Answer» C. \[{{x}^{4}}+3{{x}^{3}}+4{{x}^{2}}+3x-5\]


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