X^3 + 7x^2 -6x -42
Take out common factors
x^2(x+7) -6(x+7)
group them together (combine the factors you pulled out, which are x^2 and -6 then group them. x+7 is repeated twice so that can be combined into one factor.
final factors:
(x^2-6) (x+7)
Answer:
increases
decreases but stays above 0.
Step-by-step explanation:
Increases without bound. You are going left which means that x is getting smaller and smaller (large negatives are very small).
As x increases without bounds, f(x) approaches 0 but does not go minus.
