Question

Use the x-intercepts to find the intervals on which the graph of f is above and below the x-axis.

f(x) = (x + 5)^2

Answer 1

I think you factor then graph

y=X^2+10x+25 then graph

Answer 2

\[(- \infty,5) and (5,\infty)\]

Answer 3

nope oops\[(-\infty,-5)and(-5,\infty)\]

Answer 4

Are they above or below the x-axis?

Answer 5

Above the x axis.

Answer 6

Both?

Answer 7

yeah. Graph it and see.

Answer 8

The vertex touches the x axis at the point (-5,0) but never goes below it.

Answer 9

Yes thus its an even multiplicity

Answer 10

Thanks