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Question

If 𝜶 and 𝜷 are the zeroes of the polynomial 𝒑(𝒙)=2x2+5x+k, satisfying the relation, α2+β2+αβ = 214, then find the value of 𝒌.

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Solution

Let us find the coefficients.
a = 2,
b = 5
c = k

Step 1:
Use the relation between roots and coefficients.



Step 2:
Substitute values from Step 1 into the given relation.


Step 3:
Find the value of k.



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