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3x + 2x + 5 + x² + 4x -3
3x + 2x + 4x + x² + 5 -3
9x + x² + 2
2. 4y²-3y+2 dari 2(5y-3)
2 (5y -3) - 4y² +3y - 2
10y -6 - 4y² + 3y - 2
10y + 3y - 4y² - 2 -6
13y - 4y² -8