#1518 · Algebra · Quadratics

Real roots of quadratic equation 2

Prove that the roots of the equation $(a - b + c) x^{2} + 4 (a - b) x + (a - b - c) = 0$ are real.

~10 minProof · checked by AIdiscriminantquadratic equationsreal roots

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. IX. The Theory of Quadratic Equations, Examples IX.a, No. 13 (part 2)

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