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Find the value of x^3 + x^2 - x + 22, if x = 5/(1 - 2i)

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Find the value of x3 + x2 - x + 22, if x = 5/(1 - 2i)

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Dividend = Divisor × Quotient + Remainder

x3 + x2 – x + 22 = (x2 – 2x + 5)(x + 3) + 7

= 0.(x + 3) + 7 …..[From (i)]

= 0 + 7

= 7

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