There are two values of k for which the equation x^2+2kx+7k-10=0 has two equal real roots (that is, has exactly one solution for x). The sum of these values of k is
Answer Choices
A. 0
B. -3
C. 3
D. -7
E. 7
There are two values of k for which the equation x^2+2kx+7k-10=0 has two equal real roots (that is, has exactly one solution for x). The sum of these values of k is
Answer Choices
A. 0
B. -3
C. 3
D. -7
E. 7