Odpowiedzi

2010-04-15T15:12:12+02:00
A)13e - 5(f - 3e)=13e-5f+15e=28e-5f
b)4(-2r+s) - 10,5r=-8r+4s-10,5r=-18,5r+4s
c)-3(3x - 2y)+2(x - 2y)=-9x+6y+2x-2y=11x+4y
d)-5(2z - 4(4z - 2y)=-10z-8z+8y=-18z+8y
e)2(2p - 3q+7) - 3(p - 2q+4)=4p-6q+14-3p+6q-12=p+2
f)2(3x² - 2y+5y²) - 3(4y+5y)+2x - 3x =
6x²-4y+10y²-12y-15y²+2x-3x²=
3x²-16y-5y²+2x