Solutions
Get detailed explanations to advanced GMAT questions.
Question
What is the value of expression x(x-2)^3 when x = -1?
Option A:
-27
Option B:
-1
Option C:
1
Option D:
9
Option E:
27
Difficulty Level
EasySolution
Option E is the correct answer.
Option Analysis
Given: x(x-2)^3
Just substitute x = -1 in the above expression
-1(-3)^3 = 27 (Negative raised to the odd power is always negative).
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