$\"\"$

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The trinomial expression is $\"\"$ .

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1) The first term is perfect square: $\"\"$ .

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2) The last term is perfect square: $\"\"$ .

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3) The middle term equal to 2 (y) (4): $\"\"$ .

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$\"\"$ is a perfect square trinomial.

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Then write the expression in the form: $\"\"$ .

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$\"\"$

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$\"\"$ (The perfect square: $\"\"$ ) $\"\"$

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The solution is $\"\"$ .