Question

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

Answer 1

Answer:

X 2 + 2x + 2k = 0

put x = 2 in the equation

4 + 2 × 2 + 2k = 0

4 + 4 + 2k = 0

2k = - 8

k = - 4