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= 2x + (4x -5-5y) + 8(4x-5-5y)
= 8x² -10x -10xy + 32x -40 -40y
= 8x² (-10x + 32x) -10xy -40 -40y
= 8x² + 22x -10xy -40 -40y
Itu caranya de,jawaban yg b,c,d cri sendiri aj itu carany