Jawabanmu

2014-08-28T03:02:30+07:00
5= x^2 + bx + 5
-bx= x^2
-b= x^2/x
b= -x

smoga bsa membantu... :)
2014-08-28T03:20:20+07:00
5 = x²+bx+5
0=x²+bx
-bx=x.x⇒
-b=x
b=-x