Question

Find the value of k if x-1 is a factor of x + 5x-7k .​

Answer 1

Answer:

Let P(x)=4x

3

+3x

2

−4x+k

Given, (x−1) is a factor of P(x)

x−1=0

x=1∴ p(1)=4×(1)

2

+3×(1)

2

−4×(1)+k=0

4+3−4+k=0

k+3=0

k=−3

Hence, the value of k is −3.

Answer 2

Answer:

k = 6/7

Step-by-step explanation:

x-1=0

x=1

so

By using factor theorm

1+5×1-7k=0

6-7k=0

-7k=-6

k=-6/-7

k=6/7