Solve the following quadratic equation using square roots. Round to the nearest hundredth if necessary: (x - 6)^2 = 51

1 answer

To solve the quadratic equation \((x - 6)^2 = 51\) using square roots, follow these steps:

  1. Take the square root of both sides of the equation: \[ x - 6 = \pm \sqrt{51} \]

  2. Solve for \(x\) by isolating it: \[ x = 6 \pm \sqrt{51} \]

  3. Calculate \(\sqrt{51}\): \[ \sqrt{51} \approx 7.14 \]

  4. Now substitute back to find the two possible values of \(x\): \[ x = 6 + 7.14 \quad \text{and} \quad x = 6 - 7.14 \]

    • For \(x = 6 + 7.14\): \[ x \approx 13.14 \]

    • For \(x = 6 - 7.14\): \[ x \approx -1.14 \]

Thus, the solutions to the equation \((x - 6)^2 = 51\) are approximately: \[ x \approx 13.14 \quad \text{and} \quad x \approx -1.14 \]