Solving the Equation (x + 7)² - 49 = 0
This equation is a quadratic equation in disguise. Here's how to solve it:
1. Simplifying the Equation
- Expand the square: (x + 7)² = (x + 7)(x + 7) = x² + 14x + 49
- Substitute: Now our equation becomes: x² + 14x + 49 - 49 = 0
- Simplify: This simplifies to: x² + 14x = 0
2. Factoring
- Factor out the common factor: x(x + 14) = 0
3. Solving for x
- Set each factor to zero:
- x = 0
- x + 14 = 0
- Solve for x in the second equation: x = -14
Solution
Therefore, the solutions to the equation (x + 7)² - 49 = 0 are x = 0 and x = -14.