Question

Find "k" if 1 is the zero of the polynomial , p(x)=x^4 - 2x^3 + kx - 1

Answer 1

Hope it's help you friend ☺️

Answer 2

Hey dear!!


Given,

p(x) = x^4 -2x^3 + kx -1

x = 1


Now,

P(1) = 1^4 - 2(1)^3 + k(1) -1

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

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

p(1) = 1 -3 + k

p(1) = -2 + k


And,

-2 + k = 0

k = 2


Therefore, value of k = 2


Hope it hlpz....