Integers That Allow a Solution

Problem

Suppose there exists xRx \in \mathbb{R} such that

x2+xa2<0,x^2 + |x - a| - 2 < 0,

where aZa \in \mathbb{Z}. Find the sum of all integers aa satisfying this condition.

Answer

Solution

Difficulty5/10
TopicsExtrema, Absolute Value, algebra, inequality, Casework

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