Odpowiedzi

2010-02-14T10:28:53+01:00
A)12ax-x+a-10xa=ax
b)10ab+3ab²+5ab-3ab²=15ab
c)17x+8y-20xy+3x+15x²y²-10xy²+x-2y=
21x+6y+20xy+15x²y²-10xy²=
47xy+5x²y²
d)7xy-10xy+3x²y-7x²y+4xy=
=xy-4x²y
e)17a²b+15ab²-11ab²+13a²b-ab²=
=30a²b+3ab²
f)=0
g)=3,3ab-0,7a²
h)-⅝k²-3⅙kl
1 5 1