If x^(2) - 3x + 2 is a factor of x^(4) ...

If `x^(2) - 3x + 2` is a factor of `x^(4) - ax^(2) + b` then the equation whose roots are a and b is

A

`x^2 +9x +20 =0`

B

`x^2 -9x -20=0`

C

`x^2-9x +20=0`

D

`x^2 +9x -20=0`

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The correct Answer is:

C

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