Question

find the value of k if x=2 is a zero polynomial x2+2x+2k​

Answer 1

Answer:

p(x)=x²+2x+2k

put x=2

0=2²+2×2+2k

0=4+4+2k

-8=2k

k=-4

Answer 2

Answer:

x= 2 is a zero of polynomial p(x) = x^2 + kx+ 2k. p(x) = 0. or, k = -1.