Two mark example problem V — task. Mathematics State Board, Class 10.

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Solve \(x^4 - 13x^2 + 42 = 0\)

Answer:

\(x =\)

\(\pm \sqrt{7}\)
\(\pm \sqrt{6}\)
\(\sqrt{7}\)
\(\sqrt{6}\)

(Note: Select multiple answers if they are correct.)

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