25x²=81

To solve the equation \( 25x^2 = 81 \), follow these steps: 1. **Divide both sides by 25**: \[ x^2 = \frac{81}{25} \] 2. **Take the square root of both sides**: \[ x = \pm \sqrt{\frac{81}{25}} \] 3. **Simplify the square root**: \[ x = \pm \frac{\sqrt{81}}{\sqrt{25}} = \pm \frac{9}{5} \] So the solutions are: \[ x = \frac{9}{5} \quad \text{and} \quad x = -\frac{9}{5} \]