12xy + 2y² – 2xy = … ?
12xy + 2y² – 2xy
= 12xy – 2xy + 2y²
= (12-2)xy + 2y²
= (10)xy + 2y²
= 10xy + 2y²
Penjelasan dengan langkah-langkah:
12xy + 2y² – 2xy = … ?
= 12xy + 2y² – 2xy
= 12xy – 2xy + 2y²
= (12 – 2)xy + 2y²
= (10)xy + 2y²
= 10xy + 2y²