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Step 3- Factor or type into Desmos and see where it crosses the x-axis.

Either solve what is factored or type $$x^2+10x+9$$ into Desmos and see where it crosses the x-axis.

What are the two answers?

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Step 4- Look at the graph on Desmos.

$$x^2+10x+9<0$$ will be above or below the x-axis?

Step 4-

What is the answer using an inequality?

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Step 5- Graph on a number line

$$x^2+10x+9<0$$ will be an open or closed circle?

Graph this on your paper.