Odpowiedzi

2010-03-03T18:21:16+01:00

a) 2xy+4y²-3yx+2y²
b)10y²y-5xy²+8x²y
2010-03-03T18:23:30+01:00
A) (2xy+4y²)-(3yx-2y²)=2xy+4y²-3xy+2y²=-xy+6y²

b)10x²y-(5xy²-8x²y)=10x²y-5xy²+8x²y=18x²y-5xy²