Question

If one zero of the quadratic polynomial x ^ 2 + kx + 2 is 1, then what is the value of k?​

Answer 1

Answer: -3

Explanation:

by puggin in 1 to the equation, you get 1^2 + k + 2 = 0, which equals 3 + k; to solve, bring 3 to the other side to get k = -3.