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An SAT Math Question

Algebra Level 2

\( H(x)=x^2+1 \) and \(K(x)=-x^2+4\).

What are the solutions to \(K\left( H (x) \right)=0\)?

\( \pm i, \pm i \sqrt{3} \) \( \pm 1, \pm i \sqrt{3} \) \( \pm 2, \pm i \) \( \pm 2, \pm \sqrt{3} \)

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by Emma Ask

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