Solutions

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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

Easy

Solution

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).