A) \[1/2(a+b+c)\]
B) \[a+b+c\]
C) \[3(a+b+c)\]
D) \[2(abc)\]
Correct Answer: D
Solution :
\[{{x}^{4}}-{{x}^{3}}+{{x}^{2}}-4x+8\] \[{{x}^{3}}+{{x}^{2}}-4x+8\] \[{{x}^{4}}-{{x}^{3}}+{{x}^{2}}+4x-8\] Difference\[=4x-2x=2x=2\times 20{}^\circ =40{}^\circ .\]You need to login to perform this action.
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