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  1. Chapter 2 Class 10 Polynomials
  2. Serial order wise
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Transcript

Ex 2.4, 3 If the zeroes of the polynomial x3 – 3x2 + x + 1 are a – b, a, a + b, find a and b. Ex 2.4, 3 If the zeroes of the polynomial x3 – 3x2 + x + 1 are a – b, a, a + b, find a and b. Sum of Product zeroes Sum of Product zeroes = 𝐢/𝐴 𝛼𝛽+ 𝛽 𝛾 + 𝛾 𝛼 = 𝐢/𝐴 (a – b)a + a(a + b) + (a + b) (a βˆ’ b) = 1 a2 – ba + a2 + ab + a2 – b2 = 1 a2 + a2 + a2 βˆ’b2 = 1 3a2 βˆ’ b2 = 1 Putting a = 1 3(1)2 βˆ’ b2 = 1 3 βˆ’ b2 = 1 3 – 1 = b2 b2 = 2 b = Β± √2 Thus, a = 1 and b = Β± √2

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.