McGraw Hill Integrated II, 2012
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McGraw Hill Integrated II, 2012 View details
5. Solving Quadratic Equations by Using the Quadratic Formula
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Exercise 55 Page 138

Use the fact that the solutions of an equation are the x-intercept of the graph of the related function.

Two

Practice makes perfect
We know that the solutions of an equation can be identified by finding the x-intercepts of the graph of the related function. If the related function intersects the x-axis twice, then the equation has two real solutions.