Question

k^(2)+13k

Answer 1

k=0 , k= -13

Answer 2

k(k+13)=0
k=0
k+13=0
k=-13

Answer 3

k^(2)+13k = k(k + 13)

No instructions are given so I assume that the task is to factor the expression.

Others have transformed the expression into an equation and found its zeros.