AMC / AIME · Quadratics · Hard

Quadratics: Find the sum of positive roots of math.

Factor and complete square.

Try the problem

Find the sum of positive roots of x4−13x2+36=0x^4-13x^2+36=0.

Hint and answer

Concept to use

Parameter ranges.

Hint

Use factoring, Vieta's relations, or the discriminant.

Answer

5

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