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If α and β are the zeros of a polynomial f(x) = px 2 – 2x + 3p and

α + β = αβ, then p is

(a)-2/3  (b) 2/3   (c) 1/3   (d) -1/3

 

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Question 3 If α and β are the zeros of a polynomial f(x) = px2 – 2x + 3p and α + β = αβ, then p is (a)-2/3 (b) 2/3 (c) 1/3 (d) -1/3 Given f(x) = px2 – 2x + 3p And, α + β = αβ Sum of zeroes = Product of zeros (−𝑏)/𝑎=𝑐/𝑎 −𝐛=𝐜 Putting values −(−2) =3p 2 =3p 3p=2 𝐩=𝟐/𝟑 So, the correct answer is (b)

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.