CBSE Class 10 Answered
if the two zeros of quadratic polynomial 7x²-15x-k are reciprocals of each other the value of k?
![question image](http://images.topperlearning.com/topper/new-ate/top_mob16280099621266873608answer7250764474099002072.jpg)
Asked by bhavikabhatia1125 | 03 Aug, 2021, 22:29: PM
Let 'a' be one of the zeroes, then 1/a is the another zero.
Using the relation between zeroes and coefficients, we have
![straight a plus 1 over straight a equals 15 over 7 space space and space space straight a cross times 1 over straight a equals negative straight k over 7
rightwards double arrow straight k equals negative 7](https://images.topperlearning.com/topper/tinymce/cache/7f0486513be1aa72e9a4eacb88bbbc0b.png)
Answered by Renu Varma | 04 Aug, 2021, 11:33: AM
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