Question

If the polynomial 3x? - kx + 9x - 1 when divided by x - 1 leaves a remainder 4, then the
value of k is what

Answer 1

solution .let p(x) = 3x-kx+9x-1 when divided by x-1 leaves the remainder 4,

now ,

p(1) =3-k+9-1 = 7-k

as per condition ,

k-7=4

k =7-4 = 3.

k=3.

an example is there in the attachment and this is your answer k=3