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= 2x²y + 5x² + (36x + 3x)
= 2x²y + 5x² + 39x
b. 2x³ + 2x + 2x² + 3x
= 2x³ + 2x² + (2x+3x)
= 2x³ + 2x² + 5x
c. -2xy² + x²y - 3xy² + 2x
= (-2xy²- 3xy²) + x²y + 2x
= -5xy² + x²y + 2x
Maaf, kalau salah..