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F x= 5 is a root of equation kx2-14x-5=0 then find the value of k by completing the following activity.Sol :- One of the roots of equation kx2-14x-5=0 is Now let x= in the equationK 2- 14 - 5 =025k- 70- 5 = 025k- =025k =K = = 3 |
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Answer» Answer: Step-by-step EXPLANATION: Given, x=5 is ONE of the ROOT of the equation kx2−14x−5=0 then, it should SATISFY the equation,k(5)2−14(5)−5=0 ⇒k= 14(5)+5/5*5 ∴k= 75/25 =3 |
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