PAGE: 540 SET: Exercises PROBLEM: 1

The equation is .

The standard form of quadratic equation in x - variables is , where .

Graph the related function to the equation .

Observe the graph, the graph intersect to the x - axis at two points. So the equation has two solutions. The graph intersect to the x - axis at points are . So the solutions are .

To check the first solution, the values of substitute in the original equation, .

(solution checks)

To check the first solution, the values of substitute in the original equation, .

(solution checks)

The solutions are .

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