Solve Using the Square Root Property x^2=81

Problem

x2=81

Solution

1. Identify the equation as a quadratic in the form x2=k which is suitable for the square root property.

2. Apply the square root property by taking the square root of both sides of the equation.

3. Include both roots by adding a plus-minus sign ± to the constant side to account for both positive and negative solutions.

x=±√(,81)

4. Simplify the square root of 81 to find the final values for x

x=±9

Final Answer

x=±9

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