(2x-1)(x-3)=(x+5)(x-1) Solution

3 min read Jun 16, 2024
(2x-1)(x-3)=(x+5)(x-1) Solution

Solving the Equation (2x-1)(x-3) = (x+5)(x-1)

This article will guide you through the steps of solving the equation (2x-1)(x-3) = (x+5)(x-1).

Expanding the Equation

First, we need to expand both sides of the equation by multiplying out the brackets:

  • Left side: (2x-1)(x-3) = 2x² - 6x - x + 3 = 2x² - 7x + 3
  • Right side: (x+5)(x-1) = x² - x + 5x - 5 = x² + 4x - 5

Now our equation looks like this: 2x² - 7x + 3 = x² + 4x - 5

Rearranging the Equation

To solve for x, we need to rearrange the equation so that all the terms are on one side and the equation equals zero.

Let's subtract x² + 4x - 5 from both sides:

  • 2x² - 7x + 3 - (x² + 4x - 5) = 0

Simplifying, we get:

  • x² - 11x + 8 = 0

Solving the Quadratic Equation

Now we have a quadratic equation in the form ax² + bx + c = 0. There are a couple of ways to solve this:

  • Factoring: Try to find two numbers that add up to -11 and multiply to 8. In this case, factoring is not straightforward.
  • Quadratic Formula: The quadratic formula is a reliable way to solve any quadratic equation. It states:

x = (-b ± √(b² - 4ac)) / 2a

In our equation, a = 1, b = -11, and c = 8. Plugging these values into the quadratic formula:

x = (11 ± √((-11)² - 4 * 1 * 8)) / (2 * 1)

x = (11 ± √(89)) / 2

Therefore, the solutions to the equation are:

  • x = (11 + √89) / 2
  • x = (11 - √89) / 2

Conclusion

We have successfully solved the equation (2x-1)(x-3) = (x+5)(x-1) by expanding the equation, rearranging it into a quadratic equation, and then solving the quadratic equation using the quadratic formula. The solutions are x = (11 + √89) / 2 and x = (11 - √89) / 2.

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