Question 369520
Use the discriminant,
{{{D=b^2-4ac}}}
{{{D=(-2)^2-4(k)(5)}}}
THe roots are complex when {{{D<0}}}
{{{4-20k<0}}}
{{{20k>4}}}
{{{k>4/20}}}
{{{k>1/5}}}
The smallest integer would then be 
{{{highlight(k=1)}}}
.
.