Answer: \(\Delta = 21\)
For \(\sqrt{5}x^2 - x - \sqrt{5} = 0\):
\[\Delta = b^2 - 4ac\]\[(-1)^2 - 4(\sqrt{5})(-\sqrt{5}) = 1 + 20 = 21\]1 answer
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· 24 Oct 2026
AI-verified · Oct 2026
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