Answer:
10
Explanation:
1x^3-2x^2-4x-6
x^3-2x^2-4x-6
(4)^3-2(4)^2-4(4)-6
64-2(16)-16-6
64-32-16-6
32-16-6
16-6
So when x=4, the output will be 10
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