Question

3. 1) x(x - 8) - 20 = -15 - X(1 - x);​

Answer 1

Ответ:

-5/7

Объяснение:

x^2-8x-20= -15-x+x^2

x^2-8x+x-x^2= -15+20

-7x= 5

x= -5/7

Answer 2

To solve the equation $x(x - 8) - 20 = -15 - x(1 - x)$, we can simplify and then solve for $x$. Let's go through the steps:

1. Distribute the terms on both sides: $x^2 - 8x - 20 = -15 - x + x^2$

2. Combine like terms: $x^2 - 8x - 20 = -15 - x + x^2$ Rearranging the terms: $x^2 - x^2 - 8x + x + 20 + 15 = 0$ Simplifying: $-7x + 35 = 0$

3. Move the constant term to the other side: $-7x = -35$

4. Divide both sides by -7 to isolate $x$: $\frac{-7x}{-7} = \frac{-35}{-7}$ Simplifying: $x = 5$

Therefore, the solution to the equation is $x = 5$.