Odpowiedzi

2010-03-10T22:46:06+01:00
1) x3-6x2+11x-6=0
3x-12x+11x=6
-9x+11x=6
2x=6|:2
x=3

2) x3+4x2-x-4= 0
3x+8x-x=4
11x-x=4
10x=4|:10
x=4/10
x=2/5

3) x3+7x2-x-7 = 0
3x+14x-x=7
17x-x=7
16x=7|:16
x=7/16
2010-03-10T22:47:26+01:00
1) x3-6x2+11x-6=0
3x-12x+11x-6=0 /+6
2x=6 /:2
x=3

2) x3+4x2-x-4= 0
3x+8x-x-4=0 /+4
10x=4 /:10
x=2/5

3) x3+7x2-x-7 = 0
3x+14x-x-7=0 /+7
16x=7 /:16
x=7/16