Question

-5x(x-3)+5(x-1)^2=-20

Answer 1

Ответ:

Объяснение:

-5x(x-3) + 5(x-1)² = -20

-5x·x -5x·(-3) + 5(x² - 2x + 1) = -20

-5x² + 15x + 5x² + 5·(-2x) + 5·1 = -20

-5x² + 15x + 5x² - 10x + 5 = -20

5x + 5 = -20

5x = -20 -5

5x = -25

x = -25÷5

x = -5

Answer 2

Ответ:

Х=-5

Объяснение:

Answer 3

To solve the given equation, let's follow these steps:

Step 1: Expand and simplify both sides of the equation.

-5x(x - 3) + 5(x - 1)^2 = -20

Expand the square:

-5x(x - 3) + 5(x^2 - 2x + 1) = -20

Distribute -5x and 5:

-5x^2 + 15x + 5x^2 - 10x + 5 = -20

Simplify:

15x - 10x + 5 = -20

Step 2: Combine like terms.

5x - 10x + 5 = -20

-5x + 5 = -20

Step 3: Subtract 5 from both sides of the equation.

-5x = -20 - 5

-5x = -25

Step 4: Divide both sides by -5 to solve for x.

x = -25 / -5

x = 5

So, the solution to the equation is x = 5.