Question

5x - (3 + 2x - 2x ^ 2) = 2x ^ 2 - 7x + 18

Answer 1

Данный ответ представлен фотографией.

Answer 2

To solve the given equation for x, follow these steps:

Given equation: 5x - (3 + 2x - 2x^2) = 2x^2 - 7x + 18

Step 1: Distribute the negative sign inside the parentheses on the left side of the equation: 5x - 3 - 2x + 2x^2 = 2x^2 - 7x + 18

Step 2: Combine like terms on both sides of the equation: (5x - 2x) + 2x^2 - 3 = 2x^2 - 7x + 18 3x + 2x^2 - 3 = 2x^2 - 7x + 18

Step 3: Move all terms to one side of the equation by subtracting the terms on the right side from both sides: 3x + 2x^2 - 2x^2 + 7x = 18 + 3 3x + 7x = 21 10x = 21

Step 4: Divide both sides by 10 to isolate x: x = 21 / 10 x = 2.1

So, the solution to the equation is x = 2.1.