A) 1
B) 37
C) 324
D) 361
Correct Answer: A
Solution :
Given expression \[=\frac{{{x}^{2}}+{{y}^{2}}+xy}{{{x}^{3}}-{{y}^{3}}}=\frac{{{x}^{2}}+{{y}^{2}}+xy}{(x-y)({{x}^{2}}+{{y}^{2}}+xy)}\] \[=\frac{1}{x-y}=\frac{1}{19-18}=1\]You need to login to perform this action.
You will be redirected in
3 sec