(x-11)^2+4=0

2 min read Jun 17, 2024
(x-11)^2+4=0

Solving the Quadratic Equation: (x-11)^2 + 4 = 0

This equation is a quadratic equation in the form of ax² + bx + c = 0. Let's break down the steps to solve it:

1. Simplifying the Equation

First, we need to simplify the equation by expanding the squared term:

(x - 11)² + 4 = 0 x² - 22x + 121 + 4 = 0 x² - 22x + 125 = 0

2. Using the Quadratic Formula

Now, we can use the quadratic formula to find the solutions for x:

x = (-b ± √(b² - 4ac)) / 2a

Where:

  • a = 1
  • b = -22
  • c = 125

Plugging the values into the formula:

x = (22 ± √((-22)² - 4 * 1 * 125)) / (2 * 1) x = (22 ± √(484 - 500)) / 2 x = (22 ± √(-16)) / 2 x = (22 ± 4i) / 2

Therefore, the solutions for the equation are:

x = 11 + 2i and x = 11 - 2i

3. Understanding the Solutions

The solutions are complex numbers because the discriminant (b² - 4ac) is negative. This indicates that the quadratic equation has no real roots.

Complex numbers are numbers of the form a + bi, where:

  • a is the real part
  • b is the imaginary part
  • i is the imaginary unit, defined as √(-1)

In this case, the solutions are 11 + 2i and 11 - 2i, both complex numbers with real part 11 and imaginary parts 2 and -2 respectively.

Conclusion

The equation (x - 11)² + 4 = 0 has two complex solutions: 11 + 2i and 11 - 2i. This demonstrates how quadratic equations can have solutions that lie beyond the realm of real numbers.

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