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In the following, determine the set of...

In the following, determine the set of values of `k` for which the given quadratic equation has real roots:
(i)`3x^2+2x+k=0`
(ii) `4x^2-3k x+1=0`
(iii) `2x^2+k x-4=0`

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RD SHARMA ENGLISH-QUADRATIC EQUATIONS-All Questions
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  15. Find two consecutive natural numbers whose product is 20.

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  17. The sum of two numbers is 8 and 15 times the sum of their reciproca...

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  18. The sum of a number and its square is 63//4 , find the numbers.

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