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If 1 – i, is a root of the equation x2 + ax + b = 0, where a, b ∈ R, then find the values of a and b. - Mathematics

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प्रश्न

If 1 – i, is a root of the equation x2 + ax + b = 0, where a, b ∈ R, then find the values of a and b.

योग

उत्तर

Sum of roots `(-a)/1` = (1 – i) + (1 + i) ⇒ a = –2  ......(Since non real complex roots occur in conjugate pairs)

Product of roots, `b/1` = (1 – i) (1 + i) ⇒ b = 2

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अध्याय 5: Complex Numbers and Quadratic Equations - Solved Examples [पृष्ठ ८९]

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एनसीईआरटी एक्झांप्लर Mathematics [English] Class 11
अध्याय 5 Complex Numbers and Quadratic Equations
Solved Examples | Q 27 | पृष्ठ ८९

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