Find the roots of the function
f(x)= x^2 +2x+2
a)-1 + sq root of 2 and -1 - sq root of 2
b) -1 + i and -1 - i
c)-1 -2i sq root of 2 and -1-2i sq root of 2
d)-1 +2i and -1-2i
The i's are in italics but I can't .make them in italic here for some reason
completing the square:
x^2+2x +1= -2 +1
(x+1)^2=-1
x+1= +-i sqrt2
solve for x
1 answer