Răspunsuri

2014-05-22T19:35:35+03:00
A)4x+4y -15x -5y= -11x -y

b)6x-3x²-10+5x= -3x² +11x -10

c)x³+3x²+x-x²-3x-1= x³ +2x² -2x -1
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