Question

If 2 is a root of the equation x²+bx+12=0, find the value of b .​

Answer 1

Answer:

b=-8

Step-by-step explanation:

In the quadratic equation root is the term which satisfy the equation. If 2 is the root of the given equation the it satisfy the equation. So, Substitute x=2 in the given equation, Therefore, The value of

Answer 2

Answer:

2 is root means x = 2

putting x = 2. in eqn. we get -

(2)²+b(2)+12 = 0

4+2b+12 = 0

2b+16 = 0

2b = 0-16

b = -16/2

b = -8