Q22. - Algebra 2

Question

Solve each equation by graphing. If exact roots cannot be found, state the consecutive integers between which the roots are located.

 

$x^2+4x-4=0$

Step-by-Step Solution

Answer

The solutions to the equation $x^2+4x-4=0$ lie between -5 and -4, 0 and 1.

Step 1. Given Information.

Given to solve the equation $x^2+4x-4=0$ by graphing. And if the exact roots cannot be found, the consecutive integers between which the roots are located are to be determined.

Step 2. Explanation .

A quadratic equation has a real solution where the graph of the related function crosses or touches the x-axis.

Graphing the given equation using graphing calculator:

From the given graph, the function crosses the x axis between -5 and -4 and then in between 0 and 1.

Hence the solutions to the equation $x^2+4x-4=0$ lie between -5 and -4, 0 and 1.

Step 3. Conclusion .

Therefore, the solutions to the equation $x^2+4x-4=0$ lie between -5 and -4, 0 and 1.