Q) Find the value of ‘c’ for which the quadratic equation (c + 1) y ² – 6 (c + 1) y + 3 (c + 9) = 0 has real and equal roots.

 [CBSE 2023 – Series 3- Set 3]

Ans:

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Find the value of k for which the quadratic equation (k + 1) y2 – 6(k +1) y + 3(k +9)= 0

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