CBSE Class 10 Answered
if one zeroes of the polynomial 3x^2-8x+2k+1is seven times the other then the value of k is
Asked by rimeelaad | 08 Sep, 2021, 12:10: PM
Let one of the zeroes be 'a'
So, the other zero is 7a.
Using the relation between the coefficients and zeroes of the polynomials, we have
![straight a plus 7 straight a equals 8 over 3
rightwards double arrow 8 straight a equals 8 over 3
rightwards double arrow straight a equals 1 third
Also comma space
straight a cross times 1 over straight a equals fraction numerator 2 straight k plus 1 over denominator 3 end fraction
rightwards double arrow 2 straight k plus 1 equals 3
rightwards double arrow straight k equals 1](https://images.topperlearning.com/topper/tinymce/cache/8961bffa5ce4e40755744b288653fa9c.png)
Answered by Renu Varma | 09 Sep, 2021, 00:25: AM
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