Respuesta :

Tsuha

Answer:

D. x²+6x+9

Step-by-step explanation:

—Math

(x + 3)² = (x + 3)(x + 3)

= x² + 3x + 3x + 9

= x² + 6x + 9

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Answer:

D.) just took the Unit Session

Step-by-step explanation: