Question

If a zero of the polynomial x2

+3x+k is 2 then the value of k is

a) 5 b) 5 c) 10 d) -10
​

Answer 1

Answer:

Option d) -10

Step-by-step explanation:

x2 + 3x + k = f(x)

2x2 + 3x2 + k = f(2)

4+6+k = 0

k= -10