A side of the square with area (6x + x² + 9) square unit is
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Answer:
side = x + 3
Step-by-step explanation:
area = side²
area = x² + 6x + 9
x² + 6x + 9 = side²
(x+3)² = side²
x + 3 = side
∴ side = x + 3
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