Discussion in 'School and Campus Zone' started by pejagalan, Nov 21, 2009.

Not open for further replies.

Offline

### Senpai

Joined:
Jun 16, 2009
Messages:
5,621
Trophy Points:
176
Ratings:
+3,778 / -0
sorry sebelumnya klo salah tempat...
klo salah tempat tlg dipindahkan saja...

bro n sis,
gw nemu soal kaya gini:
1. a+b+c = 0 (a,b,c bkn sama dengan nol)
tentukan nilai dr ab+ac+bc
2. x + 1/x = 5
tentukan nilai dr x - 1/x

tlg di jwb ya bro n sis skalian,
soalnya gw bingung semenjak di ksh tuh soal...

ntar gw tanya tmen gw dlu...

sumber: soal Smukiez National Competition

• Like x 2

Offline

### Beginner

Joined:
Nov 22, 2008
Messages:
388
Trophy Points:
102
Ratings:
+4,591 / -0
coba bantu ya,,,
klo yg nmr dua..
X2+1-5X=0

tu persamaan kuadrat,, bisa nyelesaiannya kan?
nah klo uda ktemu x , nanti tinggal dimasukin ke persamaan yg kdua...

klo yg nmr satu,, tu gampang bro,, coba di utak-atik dulu deh...

Offline

### Rockstar

Joined:
Mar 11, 2009
Messages:
40,093
Trophy Points:
252
Ratings:
+33,275 / -0