SOLUTION: Please help me with this. Determin "k" if -2 is a root of 2x^2+ kx +2 =0

Algebra ->  Exponents-negative-and-fractional -> SOLUTION: Please help me with this. Determin "k" if -2 is a root of 2x^2+ kx +2 =0      Log On


   

Question 95092: Please help me with this.


Determin "k" if -2 is a root of
2x^2+ kx +2 =0
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
if -2 is a root then it satisfies the equation ... 2(-2)^2+k(-2)+2=0 ... 8-2k+2=0 ... -2k=-10 ... k=5