Question

(1) If x = -½
is a zero of the polynomial
p(x) = 8x³-kx²-x+2, find the value of k.​

Answer 1

k= 1 is answer for this problem

Answer 2

Step-by-step explanation:

Given, x = -1/2. (which is a zero of the polynomial).

As we know that,

P(E) = 8x^3-kx^2-x+2 = 0.

Putting x=-1/2.

Now,,

8×(-1/8)-k/4+1/2+2=0.

; -1-k/4+1/2+2=0.

LCM the fraction,,

Then, we get,,

-4-k+2+8/4=0.

; 6-k=0×4

; 6-k=0.

; k=6.