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b) a -2a² + 5 -3a + 4a² -3 = -2a + 2a² + 2
c) 3y² -3y + 3y -y² + 6 = 2y² + 6
Pozdrawiam
b)a-2a² +5-3a+4a²-3=2a²-2a+2
c)3y²-3y+3y-y²+6=2y²+6