Solve for a positive number x such that 2(x3 - x2 - 2x) = 1

Assessment: JAMB UTME - Mathematics - 1989 Subject: General Mathematics

Question 1 Report

Solve for a positive number x such that 2(x3 - x2 - 2x) = 1
Answer Details
2(x3 - x2 - 2x) = 1
x3 - 2 - 2x = 0
x(x2 - x - 2) = 0
x2 - x - 2 = 0
(x + 1)(x - 2) = 0
x = 2

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