Question

the value of k for which (x-1) will be a factor of 4x³-kx+1 will be .. options are given below
-4
-5
0
5​

Answer 1

Answer:

5

Step-by-step explanation:

Ur answer mate

Answer 2

Step-by-step explanation:

let,

$f(x) = 4 {x}^{3} - kx + 1.............(1)$

$if \: (x - 1) \: is \: a \: factor \: of \: f(x) \:$

then,

$f(1) = 4. {1}^{3} - k.1 + 1 = 0$

$4 - k + 1 = 0$

$k = 5$