A) 12
B) 28
C) 80
D) 160
Correct Answer: D
Solution :
Let \[x+y=20\] and \[x-y=8\] \[\therefore \] \[(x+y)(x-y)=20\times 8\] \[\Rightarrow \] \[{{x}^{2}}-{{y}^{2}}=160\]You need to login to perform this action.
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