(x-7)^2=16

2 min read Jun 17, 2024
(x-7)^2=16

Solving the Equation (x - 7)² = 16

This equation involves a squared term, which means we need to use the square root property to solve it. Here's how to break it down:

Understanding the Equation

The equation (x - 7)² = 16 states that the square of the expression (x - 7) equals 16. To find the value of x, we need to isolate it.

Solving for x

  1. Take the square root of both sides: √[(x - 7)²] = ±√16

  2. Simplify: x - 7 = ±4

  3. Isolate x: x = 7 ± 4

  4. Calculate the two possible solutions:

    • x = 7 + 4 = 11
    • x = 7 - 4 = 3

The Solutions

Therefore, the solutions to the equation (x - 7)² = 16 are x = 11 and x = 3.

Verification

You can always verify your solutions by substituting them back into the original equation:

  • For x = 11: (11 - 7)² = 4² = 16 (True)
  • For x = 3: (3 - 7)² = (-4)² = 16 (True)

Both solutions satisfy the original equation, confirming their validity.

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