Example 4 - Find a quadratic polynomial, sum and product - Finding polynomial using relationship

  1. Class 10
  2. Important Questions for Exam - Class 10
Ask Download

Transcript

Example 4 Find a quadratic polynomial, the sum and product of whose zeroes are – 3 and 2, respectively. Let the polynomial be p(x) = ax2 + bx + c, Sum of zeroes = -3 -b/a = -3 Assuming a = 1 -b/1 = -3 b = 3 Product of zeroes = 2 c/a = 2 Assuming a = 1 c/1 = 2 c = 2 Now a = 1,b = 3 and c = 2 Hence, the required quadratic polynomial = ax2 + bx + c = 1x2 + 3x + 2 = x2 + 3x + 2 Another quadratic polynomial can be 2(x2 + 3x + 2)

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
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.