A) 20
B) 30
C) 15
D) 25
Correct Answer: B
Solution :
We have, \[\alpha +\beta =-3\]and \[\alpha -\beta =-10\] (assuming \[\alpha <\beta \]) \[\therefore \,\,\,\,\,\,\,\alpha =-\frac{13}{2}\] and \[\beta =\frac{7}{2}\] Now, \[{{\alpha }^{2}}-{{\beta }^{2}}=30\]You need to login to perform this action.
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