Question

polynomial (x+1) then 2x^3+8x^2+3x+k​

Answer 1

Answer:

The value of k is -3

Step-by-step explanation:

According to the question x= -1

Putting the value of "x" in the given equation....

Equation:-

$2 {x}^{3} + 8 {x}^{2} + 3x + k$

Here we have to find the value of "k"

And the result of the given will always be zero

HERE IT GOES

$(2 { \times - 1}^{3} )+ (8 \times { - 1}^{2} ) + (3 \times - 1) + k = 0$

$= > - 2 + 8 + (- 3) + k = 0$

$= > 8 - 5 + k = 0$

$= > k \: = - 3$

So, the value of k is -3

Answer 2

Answer:

-3 is the value of k

Step-by-step explanation:

$(2x 3 +8x 2 +3x+k)$

$Now \: let's \: find \: the \: value \: of \: (k)$

2×−1 3 +8×−1 2 +3×−1+k=0

- 2 + 8 + - 3 + k

= 0=−2+8+−3+k=0

= 8 - 5 + k = 0

=8−5+k=0

=k = - 3

=k=−3

Hence, value of k =-3