Odpowiedzi

2010-02-24T17:01:44+01:00
X2-2x+1-x2+8x+16+2x+31=0
8x+48=0
8x=-48 |:8
x= -6
1 1 1
2010-02-24T17:03:23+01:00
X^2-2x+1-x^2-4x-4x-8+2x+31=0
-8x-7+31=0
-8x+24=0
-8x=-24
x=(-24):(-8)
x=4
2010-02-24T17:07:47+01:00
(x-1)²-(x+4)²+2x+31=0
x²-2*x*(-1)+(-1)²-(x²+2*x*4+4²)+2x+31=0
x²+2x+1-(x²+8x+16)+2x+31=0
x²+2x+1-x²-8x-16+2x+31=0
-4x=-16/(-4)
x=4

*---> to razy:D
1 5 1