Question

if -4 is zero of polynomial x2-x-(2k+2) then find value of k​

Answer 1

p(-4)=(-4)²-(4)-(2k+2)=0

16-4-2k-2=0

12-2k=0

-2k=-12

k=-12/-2

k=6

Answer 2

Answer:

✅Here's your answer

p (-4)..... is a zero

${x}^{2} - x - 2k - 2 = 0 \\ \\ { - 4}^{2} + 4 - 2k - 2 = 0 \\ \\ 16 + 4 - 2k - 2 = 0 \\ \\ 20 - 2k - 2 = 0 \\ \\ - 2k = - 18 \\ k = 9$

Hope it helps ✌