Question

5. If 3 is a root of the quadratic equation x2 – x + k = 0, find the value of p
so that the roots of the equation x2 + k (2x + k + 2) + p = 0 are equal.
[CBSE 2015]
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Answer 1

Answer:

p=12

Step-by-step explanation:

Step1:

finding k value

9-3+k=0

k=-6

step2:

If the roots of the equation are equal...

b^2-4ac=0