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Question=
if the sum of the squares of the zeros of the quadratic polynomial F (x) = 2 x square - 3 x + 70 is equal to 149,then the value of p is​

Answer 1

Answer:

Let α,β are the roots of the quadratic polynomial f(x) = x2+px+45 then  

α + β = -p ---------(1) and  αβ = 45

Given  (α - β)2 = 144  

∴ (α + β)2 – 4αβ = 144

⇒ (– p)2 – 4 × 45 = 144               [Using (1)]

⇒ p 2 – 180 = 144

⇒ p 2 = 144 + 180 = 324

Thus, the value of p is ± 18.

Explanation:

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Answer 2

Answer:

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