zad1 DANE są trzy sumy alegebraiczne A=-12xy-3x+2y B=4x+3y+12xy C=7xy-2y+4x wyznacz podane jednomiany A+B B+C A+C B-A C-B A+B-C A-B-C
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A+B= -12xy-3x+2y+4x+3y+12xy=x+5y
B+C= 4x+3y+12xy+7xy-2y+4x= 8x+y+19xy
A+C= 12xy-3x+2y+7xy-2y+4x= x+19xy
B-A= 4x+3y+12xy+12xy+3x-2y= 7x+y+24xy
C-B= 7xy-2y+4x-4x-3y-12xy= -5y-5xy
A+B-C= -12xy-3x+2y+4x+3y+12xy-7xy+2y-4x= -5x+7y-7xy
A-B-C= -12xy-3x+2y-4x-3y-12xy-7xy+2y-4x= -11x-3y-31xy
proszę bardzo
A+B= -12xy-3x+2y+4x+3y+12xy=x+5y
B+C= 4x+3y+12xy+7xy-2y+4x= 8x+y+19xy
A+C= 12xy-3x+2y+7xy-2y+4x= x+19xy
B-A= 4x+3y+12xy+12xy+3x-2y= 7x+y+24xy
C-B= 7xy-2y+4x-4x-3y-12xy= -5y-5xy
A+B-C= -12xy-3x+2y+4x+3y+12xy-7xy+2y-4x= -5x+7y-7xy
A-B-C= -12xy-3x+2y-4x-3y-12xy-7xy+2y-4x= -11x-3y-31xy