jee-main 2021 Q62

jee-main · India · session1_25feb_shift2 Complex Numbers Arithmetic Systems of Equations via Real and Imaginary Part Matching

If $\alpha , \beta \in R$ are such that $1 - 2 i$ (here $i ^ { 2 } = - 1$ ) is a root of $z ^ { 2 } + \alpha z + \beta = 0$, then ( $\alpha - \beta$ ) is equal to:
(1) - 7
(2) 7
(3) - 3
(4) 3

If $\alpha , \beta \in R$ are such that $1 - 2 i$ (here $i ^ { 2 } = - 1$ ) is a root of $z ^ { 2 } + \alpha z + \beta = 0$, then ( $\alpha - \beta$ ) is equal to:\\
(1) - 7\\
(2) 7\\
(3) - 3\\
(4) 3

Paper Questions

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