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perfect square trinomial VI. supply the missing term to make a true statement.

1. m² + 12m + 36 =( m + __)²
2. 16d² - 24d + 9 =( 4d - __)²
3. 9n² + 30nd + 25d ²=(__ _ 5d)²
4. 25n² - 40np + 16p²=(___ _ 4p)²
5. 121c² + 66c + 9 =(___ ___)² ​