Question

find the value if k if x-1 is the factor of the polynomial 4x^3-8kx^2+21x-12k​

Answer 1

Answer:

4* 1^3 - 8*k*1^2 + 21*1 - 12k

4 - 8k + 21 - 12k

25 - 20k

k = 20/25

= 4/5

hope it helps

Answer 2

Answer:

hey frnd here is your answer

Step-by-step explanation:

• If (x-1) is a factor of Polynomial then it should satisfy it.

• so just put x=1 in given Polynomial.

• Polynomial=4x³-8kx²+21x-12k

• 4x³-8kx²+21x-12k=0

• 4(1)³-8k(1)²+21(1)-12k=0

• 4-8k+21-12k=0

• 4+21=12k+8k

• 20k==25

• k=5/4.

so your final answer is-

k=5/4.

I hope you get the right answer

thanks for asking

plzz mark as brainlist...