Question

If the zero of quadratic polynomial x2 +3x + k is two find k

Answer 1

Answer:

The value of k is -10

Step-by-step explanation:

Given : Quadratic polynomial

One of the root is 2

To find : The value of k

Solution :

Let the given quadratic polynomial be  

Given one of the zero of the quadratic polynomial is 2.

Hence f(2) = 0

Put x = 2 in f(x), we get

Therefore, The value of k is -10.

Answer 2

Step-by-step explanation:

put p(x)=0

x+2=0

p(x)= -2×2+3×-2+k

0= -4-6+k

0= -10+k

k=10