Explanation:
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Question:
If x = 2, y = 3 and z = -5, then x^2 + y^2 +2z = ?
Answer:

Explanation:
Given



Required
Determine 

Substitute values for x, y and z in the above expression:





Answer:
democracies are nations where civil liberties and fundamental political freedoms are not only respected but also reinforced by a political culture conducive to the thriving of democratic principles.
Explanation:
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