Question

(х-4)*(х+2)=х*(15+х)-17​

Answer 1

Ответ:

x = 9 / 17

Объяснение:

Просто расскрой скобки лол

x^2 + 2x - 4x - 8 = 15x + x ^ 2 - 17

2x-4x-8=15x-17

-17x=-9

x = 9/17

Answer 2

Ответ:

x = -9/17

Объяснение:

(x-4)(x+2) = x(15+x)-17;
x²+2x-4x-8 = 15x+x²-17;
-2x-15x = -17+8;
-17x = 9|:(-17);
x = - 9/17

Answer 3

To solve the equation (х-4)(х+2) = х(15+х) - 17, you'll first need to expand and simplify both sides and then solve for x. Here's how you can do it step by step:

1. Expand both sides of the equation: (х-4)(х+2) = х(15+х) - 17

   Expand the left side using the distributive property: х^2 - 2х - 4х + 8 = х(15+х) - 17

2. Simplify further: Combine like terms on the left side: х^2 - 6х + 8 = х(15+х) - 17

3. Distribute х on the right side: х^2 - 6х + 8 = 15х + х^2 - 17

4. Now, simplify and gather like terms on the right side: Notice that the х^2 terms cancel out: -6х + 8 = 15х - 17

5. Move all the terms involving x to one side of the equation by adding 6x to both sides: 8 = 15х - 17 + 6x

6. Add 17 to both sides to isolate the terms with x on the right side: 8 + 17 = 15х + 6x

7. Combine constants on the left side: 25 = 21х

8. Finally, divide both sides by 21 to solve for x: x = 25 / 21

So, the solution to the equation is: x = 25 / 21