Question

If one zero of quadratic polynomial x²+3x+k is 2, then the value of k is. (1)
10
-10
5
-5

Answer 1

Step-by-step explanation:

f(p)= x²+3x+k

f(2)=2²+3(2)+k

0=4+6+k

0=10+k

-10=k

Answer 2

Answer:

P(x) = x^2+3x+k

p(2) = 2^2+3(2)+k=0

= 4+6+k=0

= 10+k=0

= k=-10