Question

One root of 2 x square +k x -6 = 0 is 2 find k

Answer 1

Answer:

k=-1

Step-by-step explanation:

substitution of root in place is X

2(2)^2+k(2)-6=0

2(4)+2k-6=0

8-6+2k=0

2+2k=0

2k=-2

k=-2/2

k=-1