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a. 1
soalnya cuma ada x²
2.
2(x - 3y + xy) - 2xy + 3x
= 2x - 6y + 2xy - 2xy + 3x
= 2x + 3x - 6y
= 5x - 6y
Maaf kalo salah yaa^^
Kalo kurang jelas tanyain aja^^