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If x=3 is one root of the quadratic equations x2-2kx-6=0 then find the value of k.

Posted by Nirmala Dabral 6 years, 5 months ago

CBSE > Class 10 > Mathematics

3 answers

Shivangi Rawat 6 years, 5 months ago

p(x)=x²-2kx-6=0, p(3)=3²-2×k×3-6=0, =9-6k-6=0, =3-6k=0, =6k=3, =k=3/6, =k=½ Therefore, the value of k is ½.

1Thank You

Mohammad Amaan 6 years, 5 months ago

K=1/2

0Thank You

Unnati Agarwal 6 years, 5 months ago

The equation is x square - 2kx - 6

0Thank You

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CBSE > Class 10 > Mathematics