The side of the square with area 4x2–12x +9 square units is ____
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Step-by-step explanation:
4x² + 12x + 9
=> ( 2x )² + 2( 2x × 3 ) + 3²
=> ( 2x + 3 )²
=> Area of square = ( 2x + 3 )²
=> side² = ( 2x + 3 )²
=> side = 2x + 3 units
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