Having rewritten the equation in standard form, we can enter it in the calculator by pushing Y= and writing the non-zero side in the first row.
Next, by pushing GRAPH, the calculator will draw the graph of the equation. Note that we are looking for x-values that make the y-value equal 0.
Let's zoom in, so that we can see the zeros better. To do this, push WINDOW and change the settings to a much smaller window. Then push GRAPH once more to draw the equation with these new settings.
We are able to see that the graph intersects the x-axis twice and there are two zeros. To find them, we can use the zero option in the calculator. This can be found by pressing 2ND and then CALC.
After selecting the "zero" option, we need to choose left and right boundaries for one of the zeros. Finally, the calculator asks for a guess where the zero might be. After that, it will calculate the exact point for us. We will have to do this twice, once for each zero.
