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sifat distribusi
3x² + 12 = 2x² + 8x
bentuk umum PK ialah ax² + bx + c = 0
Kosongkan ruas kanan.
Pindahkan ruas kanan ke ruas kiri.
3x² + 12 - 2x² - 8x = 0
PK --> x² - 8x + 12 = 0