Question

find a value of k so that (x+2) will be a factor of x^3 - 4x^2 +kx +2

Answer 1

Use synthetc division method @mbailey1

Answer 2

can you help me solve it using that? @hba

Answer 3

@mbailey1 Are you familiar with SDM ?

Answer 4

no @hba

Answer 5

use the factor theorem

f(-2) = 0

so

(-2)^3 -4(-2)^2 +k(-2) + 2 = 0

solve for k...

Answer 6

i got -3 =k, is that right @campbell_st

Answer 7

nope... i don't think its correct...

Answer 8

what did you get? @campbell_st

Answer 9

I didn't get -3

its

-8 - 16 -2k + 2 = 0