in this week we learned how to solve quadratic inequalities
a question will look something like 2x^2 -8x -10 < 0
we now the parabola has a minimum point because of the 2x and if we factor it we know that the x intercepts are -1 and +5 so the graph look like this
and since the question was < than 0 so that means everywhere where the parabola is in the negitives is the area so the answer would be -1<x<5 which means the x intercept has to be between -1 and +5