1. Chapter 4 Class 11 Complex Numbers
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Question 2 - Quadratic Equations with Complex Roots - Chapter 4 Class 11 Complex Numbers

Last updated at Dec. 16, 2024 by Teachoo

Transcript

Question 2 Solve the equation 2๐‘ฅ2 + ๐‘ฅ + 1 = 0 2x2 + x + 1 = 0 The above equation is of the form ๐‘Ž๐‘ฅ2 + ๐‘๐‘ฅ + ๐‘ = 0 Where a = 2 , b = 1 , c = 1 ๐‘ฅ = (โˆ’๐‘ ยฑ โˆš( ๐‘^2 โˆ’ 4๐‘Ž๐‘ ))/2๐‘Ž = (โˆ’1 ยฑ โˆš((1)^2 โˆ’ 4 ร— 2 ร— 1))/(2 ร— 2) = (โˆ’1ยฑ โˆš(1 โˆ’ 8))/4 = (โˆ’1ยฑ โˆš( โˆ’ 7))/4 = (โˆ’1 ยฑ โˆš(โˆ’1 ร— 7))/4 = (โˆ’1 ยฑ โˆš(โˆ’1 ร— 7))/4 = (โˆ’1 ยฑ โˆš(โˆ’1 )ร— โˆš7)/4 = (โˆ’1 ยฑ โˆš7 ๐‘–)/4 Thus, ๐‘ฅ = (โˆ’1 ยฑ โˆš7 ๐‘–)/2
  1. Chapter 4 Class 11 Complex Numbers
  2. Serial order wise

    3. Quadratic Equations with Complex Roots

    Quadaratic equation →
Quadaratic equation →
Chapter 4 Class 11 Complex Numbers
Serial order wise

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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 14 years. He provides courses for Maths, Science and Computer Science at Teachoo