Source: Russian Mathematics Olympiad Problem 8th Grade.
Taken from Tanya Khovanova's blog
Problem: How many negative roots does the equation x4 − 5x3 − 4x2 − 7x + 4 = 0 have?
Taken from Tanya Khovanova's blog
Problem: How many negative roots does the equation x4 − 5x3 − 4x2 − 7x + 4 = 0 have?
none.
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