Answer:
Step-by-step explanation:
a²+ 2ab + b² = (a +b)²
x² + 12x + 36 = x² + 2 * x * 6 + 6² {Here a = x and b = 6}
= (x + 6)²
b
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12, 9 plus 3 is 12 jebxuenxhdndb
the answer is c.......