Biểu diễn 1 ràng buộc trên mặt phẳng tọa độ Oxy là
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A perfect square is something times that same thing. Example (x+2)(x+2)
The reason it's called a perfect square is because it can be re-written as a squared function:
The reason it's called a perfect square is because it can be re-written as a squared function: