A) \[16{{x}^{4}}+25+40{{x}^{2}}\]
B) \[16{{x}^{4}}+28+30{{x}^{2}}\]
C) \[16{{x}^{4}}+30+20{{x}^{2}}\]
D) \[16{{x}^{4}}+8+25{{x}^{2}}\]
Correct Answer: A
Solution :
(a): apply \[{{\left( a+b \right)}^{2}}={{a}^{2}}+{{b}^{2}}+2ab.\]
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