Which of the following is a valid conclusion for the problem x2 + 6x + 8 = 0?

x - 3 = 0 and x + 5 = 0
x + 4 = 0 and x - 2 = 0
x + 4 = 0 and x + 2 = 0
x - 4 = 0 and x + 2 = 0

option (3) is correct.

 or

Step-by-step explanation:

Given quadratic equation

We have to choose a valid conclusion for the problem  

Consider the given quadratic equation   .

We can solve the quadratic equation using middle term split,

6x can be written as 2x +4x  , thus equation becomes,

Taking x common from first two term and 4 common from last two terms, we have,

Using zero product property, ,we have,  

 or

Thus, option (3) is correct.

a is the correct