CBSE BOARD X, asked by prashantyadav8707, 29 days ago

If one root of the quadratic equation 7x2 + Kx +7 = 0 is , then find value of K.

Answers

Answered by m3679406

0

Answer

A

12

Since, 4 is root of x2−7x+k=0

⇒42−7×4+k=0

⇒16−28+k=0

⇒k=12

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