If (t-8) is a factor then we know that (t-8)(something) = t^2 - kt - 48granite wrote:If (t-8) is a factor of t^2 - kt - 48, then k =
A -6
B -2
C 2
D 6
E 14
OA C
Change this to: (t-8)(t+n) = t^2 - kt - 48
We can see that (-8)(n) = -48
So, n must equal 6
So, we now know that: (t-8)(t+6) = t^2 - kt - 48
Expand the left side to get: t^2 - 2t - 48 = t^2 - kt - 48
So, k must equal 2
Answer = C
Cheers,
Brent
