7

Part of 1983 IMO Longlists

Problems(1)

Find x such that x^4+x^3+x^2+x+1 is perfect square (old)

Source:

Find all numbers

x \in \mathbb Z

for which the number

x^4 + x^3 + x^2 + x + 1

is a perfect square.

inequalitiesnumber theory proposednumber theory