Question

one of the roots of the equation x2 + kx - 6 =0 is 3 , and k is constant.?

which of the quantity is larger ?
A. value of k
B. -1

Answer 1

plug in x=3:
9 - 3k - 6 = 0
3k = 3
k = 1

A

Answer 2

9+3k-6=0
3+3k=0
k=-1

Answer 3

k =-1 is correct

Answer 4

A=B

Answer 5

yup