Question

2. Determine the value of k for which the given value is a solution of the equation 2x2 + kx +
6 = 0, x= -2
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Answer 1

Answer:

put x=-2

2x2+kx-2+6=0

4-2k+6=0

10-2k=0

-2k=-10

2k=10

hence k=5

Answer 2

Answer:

K= 5

Step-by-step explanation:

if k = 5 and x=-2 then :

={2×2}+{5×(-2)}+6 = 0

=4+(-10)+6 = 0

=10+ (-10) =0

=0 =0