Respostas

2013-03-14T17:17:52-03:00

x(25-10+1) - 2x - 6 + x- 5 = 0

25x - 10x + x -2x - 6 +x - 5 = 0

15x - 11 = 0

15x = 11

x = 11/15

22 4 22
2013-03-14T18:43:10-03:00

x(5-1)²-2(x+3)+(x-5)=0

x.16- 2x+6+ 4=0

16x- 2x+ 6+4=0

16x-2x= 0-4-6

14x= 10

x=10/14

 

1 5 1