Question

if one zero of the polynomial x^2 - 5x + k is -4 then what is value of k​

Answer 1

Answer:

${x}^{2} - 5x + k = 0$

${-4}^{2} - 5 \times -4 + k = 0$

$16 +20 + k = 0$

$36 + k = 0$

$k = -36$

Answer 2

Answer:

k= -36

Step-by-step explanation:

x²-5x + k = 0

-4²-5x - 4 + k=0

16+20+k=0

36+k=0

k = -36