TMUA 2023 Paper 2 Q18 — Worked Solution

P2·Algebra & Surds, Inequalities·6.0Official · 2023 · Q18

quartic-rootshidden-quadraticiff-condition

The equation

x^{4} + b x^{2} + c = 0

has four distinct real roots if and only if which of the following conditions is satisfied?

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