(x+6)^3=25(x+6)

2 min read Jun 17, 2024
(x+6)^3=25(x+6)

Solving the Equation (x+6)^3 = 25(x+6)

This equation presents a cubic equation with a seemingly complex form. However, we can simplify it by employing a strategic approach. Here's a breakdown of the steps involved in solving the equation:

1. Simplifying the Equation

First, let's simplify the equation by bringing all terms to one side:

(x+6)^3 - 25(x+6) = 0

Now we can see a common factor of (x+6). Let's factor it out:

(x+6) [(x+6)^2 - 25] = 0

2. Applying the Difference of Squares

The expression inside the brackets resembles the difference of squares pattern: a^2 - b^2 = (a+b)(a-b). Applying this, we get:

(x+6) [(x+6) + 5] [(x+6) - 5] = 0

Simplifying further:

(x+6) (x+11) (x+1) = 0

3. Finding the Solutions

Now, for the product of three factors to equal zero, at least one of them must be zero. This gives us three potential solutions:

  • x + 6 = 0 => x = -6
  • x + 11 = 0 => x = -11
  • x + 1 = 0 => x = -1

Therefore, the solutions to the equation (x+6)^3 = 25(x+6) are x = -6, x = -11, and x = -1.

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