Question

If one zero of the quadratic polynomial x2-5x+k is -4, then the value of k is

Answer 1

Answer:

-36

Step-by-step explanation:

x2-5x+k is given polynomial

if one of the zero(alpha)= -4

sum of zeroes = -b/a

=-(-5)/1=5

alpha+beta=5

-4+beta=5

beta=9

product of zeros =c/a=k/1=k

alpha×beta=k

9(-4)=k

k= -36

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