Solution: How many positive real solutions are there in the polynomial

(Last Updated On: December 8, 2017)

How many positive real solutions are there in the polynomial

Problem Statement:

How many positive real solutions are there in the polynomial: x4 – 4×3 + 7×2 – 6x – 18 = 0.

Problem Answer:

There are three sign changes, so three or one positive real solutions.

Solution:

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