(x-1)^2=25

2 min read Jun 17, 2024
(x-1)^2=25

Solving the Equation (x-1)^2 = 25

This equation presents a simple yet important example of solving quadratic equations. Let's break down the process step by step:

Understanding the Equation

The equation (x-1)^2 = 25 represents a quadratic equation, meaning it involves a variable raised to the power of 2. We need to find the values of 'x' that satisfy this equation.

Solving for 'x'

  1. Take the square root of both sides:

    √((x-1)^2) = ±√25

  2. Simplify:

    x - 1 = ±5

  3. Isolate 'x':

    x = 1 ± 5

  4. Solve for both possible solutions:

    • x = 1 + 5 = 6
    • x = 1 - 5 = -4

Therefore, the solutions to the equation (x-1)^2 = 25 are x = 6 and x = -4.

Verifying the Solutions

To verify our solutions, we can substitute each value of 'x' back into the original equation:

  • For x = 6: (6 - 1)^2 = 5^2 = 25 (True)
  • For x = -4: (-4 - 1)^2 = (-5)^2 = 25 (True)

Both solutions satisfy the original equation, confirming our calculations.

Conclusion

Solving the equation (x-1)^2 = 25 demonstrates the process of solving quadratic equations through taking square roots and isolating the variable. We found two solutions, x = 6 and x = -4, which both satisfy the original equation. This type of problem emphasizes the importance of understanding the properties of squares and square roots in solving mathematical equations.