Question

FIND "K" if (x - 1) is a factor of
( 2x^3+ 9x^2 + x + k​

Answer 1

Answer:

2x^3+9x^2+x+k =0

2(1)^3+9(1)^2+1+k =0

2+9+1+k = 0

12+k = 0

k = -12

you can check this answer by putting -12 in place of k.

Answer 2

Step-by-step explanation:

ANSWER:-

$x - 1 = 0$

$x = 1$

Concept:-

• We need to place the values of x.
• Then , we will equate it to zero.

Let's Do!

$2 {x}^{3} + 9 {x}^{2} + x + k = 0$

$2 {(1)}^{3} + 9 {(1)}^{2} + 1 + k = 0$

$2 + 9 + 1 + k = 0$

$12 + k = 0$

$k = - 12$

is the answer.

More to Know:-

• The equation will be equal to zero.
• This is because I had equated x as equal to zero.
• Then we simply need to place the value, and you are done!