Question

How do you solve this quadratic inequality?
(x+3)(x+1) greater than 0

Answer 1

If the product of two factors are greater than 0, than either both factors are positive, or both factors are negative:

\[\implies (x+3 >0 \text{ AND } x+1 > 0) \text{ OR }(x+3 < 0 \text{ AND }x+1 < 0)\]