The expanded form of
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∴ The expanded form of expression (3x - 2y)2 is ( 9x2 + 4y2 - 12xy).
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Using identity : ( a- b)² = a² + b² - 2ab
( 3x)² + ( 2y)² - 2 × 3x × 2y
9x² + 4y² - 12xy
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