Yes, it's me again and I need more help. This time I couldn't do anything with this problem because I really did not understand this one. Here is the problem: (x+6)(x-16)(x+5)>0; The solution set is (xl ).
Make the following table:
- In the first column, identify the factors and the expression that you want to analize.
- Following up on this, find where the expressions get zero and identify every interval as it's written above.
- Pick a number of the interval and substitute it into the factors to see the sign in such interval.
- Finally multiply vertically to see the sign of the whole expression.
We require the positive sign, so the solution set is