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Simplify: (m + 4)(m + 4)

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m² + 4m + 16

m² + 8m + 16

m² + 4m + 8

m² − 8m + 16

answer is A.

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Detailed Solution

(m + 4)(m + 4)

= (m + 4)²

= (m)² + 2 × m × 4 + (4)² [Using identity: (a + b)² = a² + 2ab + b²]

= m² + 8m + 16

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