Question

If one zero of the quadratic polynomial i x2+3x+k is 2 find value of k

Answer 1

Answer:

Step-by-step explanation:

If one of the zero is 2

Then

Putting the value of zero in equation

x^2+3x+k

(2)^2+3×2+k=0

4+6+k=0

10+k=0

k=-10

Answer 2

The value of k is -10.

Step-by-step explanation:

Given : If one zero of the quadratic polynomial $x^2+3x+k$ is 2.

To find : The value of k ?

Solution :

If 2 is the root of the quadratic polynomial $x^2+3x+k=0$ then it satisfy the equation.

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

$4+6+k=0$

$10+k=0$

$k=-10$

Therefore, the value of k is -10.

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