Algebra-1

To determine which expression is not a perfect square, we will analyze each expression using the perfect square formula:

 

A. 

Here,

Calculate :

The constant term is , so:

This is a perfect square.

B. 

Here, b = -8

Calculate

The constant term is 15, which is not equal to 16. Thus, this expression cannot be written as a perfect square.

C. 

Here, b = -12.

Calculate

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