If one root of quadratic equation x2 - 7x + k = 0 is 4 then find theva – InterviewSolution

1.

If one root of quadratic equation x2 - 7x + k = 0 is 4 then find thevalue of k.

Answer»

x^2-7x+k=0if one root = 4 x= 4(4)^2-7(4)+k=016-28+k=0k= 12

k=12 is correct answer of this question

x^2-7x+k=0; x=4;, (4)^2-7(4)+k; 16-28+k; ; -12+k; k=12

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