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Questions  >>  SAT  >>  Math  >>  Quadratic Equations
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Q)

The factors of $x^4+2x^2+9$ are ?

$\begin{array}{1 1} (a)\; (x^2+2x+3),(x^2-2x+3)\\ (b)\;(x^2+3),(x^2-3)\\(c)\;(x^2+2x+3),(x^2+2x+3)\\(d)\;(x^2+3),(x^2+3) \end{array}$

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