Odpowiedzi

2009-11-19T15:10:12+01:00
1.
2ΙxΙ + x = 1
2x+x=1
3x=1
x=1/3
2.
IXI - 2x = 5
x-2x=5
-x=5
x=-5
3.
Ix+3I - 2x = -2
x+3-2x=-2
-x=-2-3
-x=-5
x=5
4.
I2x+1I - x = -3
2x+1-x=-3
x=-3-1
x=-4
5.
IxI + x = 0
x+x=0
2x=0
x=0
1 1 1