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| 1. |
If ax ^2 + 2bx+ c=0 , a_1x^2+ 2b _1x +c_1=0havea commonroot, thenthe rootsof theequation( b^2 -ac )x^2+(2b b_1 - a a_1 - a_1 c ) x+ (b_1^2-a_1 c_1 ) =0 are |
| Answer» Answer :B | |