Question

5x-(3+2x-2x во второй )=2xво 2 степени -7x+17

Answer 1

5x-(3+2x-2x^2)=2xво^2-7x+17
5x-3-2x+4x=4x-7x+17
5x-2x+4x-4x+7x=17+3
10x=20
x=20:10
x=2
ответ 2

Answer 2

Let's simplify the equation step by step:

5x - (3 + 2x - 2x²) = 2x² - 7x + 17

First, let's simplify the expression inside the parentheses:

5x - (3 + 2x - 2x²) = 2x² - 7x + 17

5x - (3 + 2x - 2x²) = 2x² - 7x + 17

Now, distribute the negative sign inside the parentheses:

5x - 3 - 2x + 2x² = 2x² - 7x + 17

Combine like terms:

3x - 3 + 2x² = 2x² - 7x + 17

Next, move all the terms to one side of the equation:

3x - 3 + 2x² - 2x² + 7x - 17 = 0

Simplify the equation further:

10x - 20 = 0

Now, solve for x:

10x = 20

x = 20/10

x = 2

So the solution to the equation is x = 2.