Pearson Algebra 2 Common Core, 2011
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Pearson Algebra 2 Common Core, 2011 View details
Cumulative Standards Review

Exercise 24 Page 494

You can find the real roots by graphing.

x=- 0.75

Practice makes perfect

Let's enter the function in the calculator by pushing Y= and writing the right-hand side of the equation in the first row.

Window with inequality
Next, by pushing GRAPH, the calculator will draw the function.
Window with a graph

We can see that the function has one real root. To find the x- intercept of f, push 2nd, TRACE, and then choose the second option, zero. Next, we need to choose a left bound and right bound for the zero value. Finally, the calculator will ask for a guess of where the zero might be.

Therefore, we obtain that the x- intercept is at x=- 0.75.