Question

if x=-1/2 is a zero of the polynomial p(x)=8x-k find value of k​

Answer 1

Answer:

$8x - k = 0 \\ \\ 8( \frac{ - 1}{2} ) - k = 0 \\ \\ \frac{ - 8}{2} = k$

$\huge{\mathcal{\boxed{\orange{k=-4}}}}$

Answer 2

Step-by-step explanation:

if -1/2 is a zero of the polynomial p x is equal to 8 x minus k then:

p(x) = 8x-k

p(-1/2)= 8(-1/2)+k

0= -4+k

4=k