Question 895842
{{{y^2-ky-36=(y+a)(y+b)}}}
{{{y^2-ky-36=y^2+(a+b)y+ab}}}
{{{ab=-36}}}
{{{a+b=-k}}}
Look at the factors of -36 such that {{{ab=-36}}}
1, -36
2, -18
3, -12
4, -9
6, -6
9, -4
12, -3
18, -2
36, -1
Then sum them to find {{{k}}}
-35,-16,-9,-5,0,5,9,16,35