A) (4, 4)
B) (-4,4)
C) \[(4,-4)\]
D) \[(-4,-4)\]
Correct Answer: A
Solution :
We have equal roots, therefore\[{{\lambda }^{2}}=4\mu \]. Now second equation \[{{x}^{2}}+\lambda x-12=0\] has a root 2, so put \[x=2\]Þ \[4+2\lambda -12=0\]Þ \[\lambda =4\] Hence from\[{{\lambda }^{2}}=4\mu \], we have \[\mu =\frac{16}{4}=4\] Þ \[(\lambda ,\mu )=(4,4)\].You need to login to perform this action.
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