Odpowiedź:
f) 4xy -2x -3y +5x -1y +5xy = 9xy +3x -4y
g) 6m -2m² -n +3m -2n -5m² = -7m² +9m -3n
h) -2t -3t +t² -5s -4t -2t² +s = -1t² -4s -9t
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Odpowiedź:
f) 4xy -2x -3y +5x -1y +5xy = 9xy +3x -4y
g) 6m -2m² -n +3m -2n -5m² = -7m² +9m -3n
h) -2t -3t +t² -5s -4t -2t² +s = -1t² -4s -9t