A) 2
B) \[-1\]
C) 0
D) 1
Correct Answer: C
Solution :
\[\frac{a}{b}+\frac{b}{a}=2\] \[\Rightarrow \] \[\frac{{{a}^{2}}+{{b}^{2}}}{ab}=2\] \[\Rightarrow \] \[\frac{{{\left( a-b \right)}^{2}}+2ab}{ab}=2\] \[{{\left( a-b \right)}^{2}}=2ab-2ab\] \[{{\left( a-b \right)}^{2}}=0\] \[a-b=0\]You need to login to perform this action.
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