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1991
Abstract The roots are real and distinct, real and equal, or complex according as b2 — 4ac is positive, zero, or negative respectively. The sum of the roots is — b/a; the product of the roots is c/a.
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Abstract The roots are real and distinct, real and equal, or complex according as b2 — 4ac is positive, zero, or negative respectively. The sum of the roots is — b/a; the product of the roots is c/a.
openaire +1 more source