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| 1. |
If one zero of the quadratic polynomial x2+3x+k is 7,then find the value of k |
| Answer» Let p(x) = x2 + 3x + kIf one zero of the p(x) is 7, thenp(7) = 0=> (7)2 + 3 x 7 + k = 0=> 49 + 21 + k = 0=> 70 + k = 0=> k = -70 | |