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= x² + 2xy + 4ax + 2xy + 4y² + 6ay + 3ax + 6ay + 12a²
= x² + 4y² + 12a² + 4xy + 7ax + 12ay
( x + 2y + 3a )( x + 2y + 4a )
= x + x + 2y + 2y + 3a + 4a
= 2x + 4y + 7a
Kalo perkalian
( x + 2y + 3a )( x + 2y + 4a )
= x² + 2xy + 4ax + 2yx + 4y² + 8ya + 3ax + 6ay + 12a²
= x² + 2xy + 2xy + 4ax + 3ax + 4y² + 8ay + 6ay + 12a²
= x² + 4xy + 7ax + 4y² + 14ay + 12a²
Maaf kalo salah yhaa^^
Cek lagi, takut aku kurang teliti^^