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3x.x+3x.2+(-4).x+(-4).2
3x²+6x-4x-8
3x²+2x-8
. (titik) = × (kali)
Cara pertama ( sifat distribusi ) :
3x² + 2x - 8 = 3x² + 6x - 4x - 8
= 3x ( x + 2 ) - 4 ( x + 2)
= ( x + 2 ) ( 3x - 4 )
Cara kedua ( menggunakan rumus ) :
3x² + 2x - 8 = 1/3 ( 3x + 6 ) ( 3x - 4 )
= ( x + 2 ) ( 3x - 4 )
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