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FPB nya adalah 2
Maka, 2( 2x^2 + 3x - 9 )
= 2( 2x - 3 ) ( x + 3 )
= ( 2x - 3 ) ( 2x + 6 )
= x² + 3/2x - 9/2
= (x + 3) (x - 3/2)
= (2x + 6) (2x - 3)