Q131 / 200 · AP EAMCET 2001 · Mathematics

If 1 is a multiple root of order 3 for the equation $x^4-2 x^3+2 x-1=0$, then the other root is

  • A
    $0$
  • Correct answer
    B
    $-1$
  • C
    $1$
  • D
    $2$

Solution

Given that, $x^4-2 x^3+2 x-1=0$ Put $x=-1$, $\Rightarrow \quad 1+2-2-1=0$ Therefore, -1 is also the root of the equation.

Hence, the correct answer is option: 'B'.

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