Question

if -1 is a zero of polynomial p(x)=kx2-4x+k. find k

Answer 1

Hey user here is your answer.....

---> As (-1) is zero of polynomial

Given equation- kx^2-4x+k

◆Put x=(-1)

◆k(-1)^2-4(-1)+k=0

◆k+4+k=0

◆2k+4=0

◆2k=-4

◆k=-4/2

◆k=-2

Hope it helps you☺️

#Rohan ( Maths aryabhatta )

Answer 2

Answer:

kx2-4x+k

Step-by-step explanation:

-b/a = -1

a= 1

b= 4