Question

If x = 1 is a zero of the polynomial p(x)=x-2x + 4x+k, then find the
value of k​

Answer 1

Given,x=1

p(x)=x-2x+4x+k

p(1)=(1)-2(1)+4(1)+k=0

1-2+4+k=0

3+k=0

k=-3

Therefore, if x=1 is a zero of the polynomial p(x)=x-2x+4x+k, the value of k will be -3.

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Answer 2

Answer:

value of k = -3

Step-by-step explanation:

Given,

x= 1

polynomial = p(x) = x-2x+4x+k

x - 2x + 4x + k = 0

putting value of x = 1 on given polynomial

1 - 2(1) + 4(1) +k = 0

1 - 2 + 4 + k = 0

-1+4+k= 0

3 + k = 0

k = -3