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CBSE Class 10 Answered

Find a cubiic polynomial whose zeroes are 1,-2,3
Asked by arindeep.singh | 27 Apr, 2020, 11:22: AM
answered-by-expert Expert Answer
 
Let α = 1, β = -2 and γ = 3
 
 α + β + γ = 1 - 2 + 3 =2
αβ + βγ +γα = -2 - 6 + 3 = -5
αβγ = -6
 
Cubic polynomial is
x3 - (α + β + γ)x2 + (αβ + βγ +γα)x - αβγ.
  = x3 - 2x2 + 5x + 6 
Answered by Yasmeen Khan | 27 Apr, 2020, 03:34: PM

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