Signs of quadratic roots

Discuss the signs of the roots of the equation $p x^{2} + q x + r = 0$ .

~10 minProof · checked by AIquadratic equationsDescartes' rule of signsnature of roots

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. IX. The Theory of Quadratic Equations, Examples IX.a, No. 30

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