Question

x^3+k^2x^2-2kx-16 determinate k so the polynom is devidable with x-2

Answer 1

if it is dividable by x -2 it should be its factor so subs x =2 in eq

Answer 2

equate it to 0

Answer 3

u will get k

Answer 4

if divisible by 2
2^3 + 4k^2 - 4k - 16 = 0

Answer 5

4k^2 - 4k - 8 = 0
k^2 - k - 2 = 0
solve for k

Answer 6

can you solve this?

Answer 7

k=2 and k=-1?

Answer 8

yes

Answer 9

thanks! =)