what should be added to 4a square+12a to make it a perfect square
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4a²+12a+9
=(2a)²+2.2a.3+3²
=(2a+3)²
∴, 9 must be addedto 4a²+12a to make it a perfect sqare.
=(2a)²+2.2a.3+3²
=(2a+3)²
∴, 9 must be addedto 4a²+12a to make it a perfect sqare.
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