Please help me……………………

B

Step-by-step explanation:

5(x-2)(x+4)>0 can be simplified as (x-2)(x-4)>0, you just divide both sides by 5.

You can temporarily treat the inequality sign as an equals sign. So in a regular equation like (x-2)(x+4)=0, we can split this up into two different equations:

(x-2)=0 and (x+4)=0

This gets you x=2 and x=-4. However, since there is not actually an equals sign in this equation, you have to find another way to figure out which way the inequality sign goes for both x-values. But by this point you already know the x-values that will be employed in the inequality!

Now when you look at A, B, C, and D, you can eliminate options:

The only options that include an inequality with 2 and -4 are A and B. So it has to be one of the two.

Proceed by plugging in possibilities for each of the solutions given.

Try A: x>-4 and x<2

-3>-4 so I will use -3 as the x-value:

5(-3-2)(-3+4)>0

5(-5)(1)>0

-25>0

This is not true so A is not the answer.

Try B: x<-4 or x>2

-5<-4 so I will use -5 as the x-value:

5(-5-2)(-5+4)>0

5(-7)(-1)>0

35>0

This is true so B could be the answer. Now let's try the second x-value possibility, when x>2.

3>2 so I will use 3 as the x-value:

5(3-2)(3+4)>0

5(1)(7)>0

35>0

Also true, so B is correct.

but which class are u may know that first

c

step-by-step explanation: easy math