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11 March, 16:12

Explain why the polynomial 144x2 - 200x + 81 is not a perfect square.

A. 81x ≠ 2 (20x ∙ 9)

B. 144x ≠ 2 (20x ∙ 12)

C. 200x ≠ 2 (9x ∙ 12)

D200x ≠ 2 (12x ∙ 9)

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  1. 11 March, 18:15
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    D. The middle term does not equal the outside terms multiplied by each other twice.
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