Question

2(x-1)(x+5)-1x(x+4)=112

Answer 1

Ответ:

Объяснение:

2х-2-2х-5-х2-4х=112

-6х=112+2+5

-6х=119

х=-19,3

Answer 2

To solve the equation 2(x-1)(x+5) - 1x(x+4) = 112, you'll want to simplify it and then solve for x. Here are the steps:

1. Expand the expressions on both sides of the equation:

   2(x-1)(x+5) = 1x(x+4) + 112

   Now, let's expand each side:

   2(x^2 + 5x - x - 5) = x^2(x+4) + 112

2. Distribute the 2 on the left side and the x^2 on the right side:

   2x^2 + 10x - 2x - 10 = x^3 + 4x^2 + 112

3. Combine like terms on each side:

   2x^2 + 8x - 10 = x^3 + 4x^2 + 112

4. Move all terms to one side of the equation to set it equal to 0:

   x^3 + 4x^2 - 2x^2 - 8x - 112 + 10 = 0

5. Combine like terms again:

   x^3 + 2x^2 - 8x - 102 = 0

Now, you have a cubic equation. You can attempt to factor it, use numerical methods, or approximate solutions. Unfortunately, cubic equations don't always have straightforward analytical solutions. You can try factoring or using numerical methods like the Newton-Raphson method to find approximate solutions. If you need a specific numerical solution, you can use a calculator or software with equation-solving capabilities.