Find the value of k, for which one root of the quadratic equation kx²-14x+18=0 is 25.
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Answer:
0.54 or 342/625
Step-by-step explanation:
For the quadratic equation kx²-14x+8 = 0,
one root is 25
So, x=25 must satisfied to the quadratic equation.
=> k(25)²-14(25) +8 = 0
=> 625k-350+8 = 0
=> 625k = 350-8
=> 625k=342
=> k=342/625
=> k=0.54
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