Question

4x²-4x+1/4x-2 при x=-2

Answer 1

4x/(4x^2-1)-1/(2x-1)=(2х+1)/(4x^2-1)=1/(2х-1). При х=2 получим 1/3.

Answer 2

4x²-4x+1 /(4x-2) = (2x-1)²/ 2(2x-1) = (2x-1) /2

при x= -2    (2*(-2) -1)/2 = -5/2 =-2,5

Answer 3

To find the value of the expression 4x² - 4x + 1 / 4x - 2 when x = -2, we need to substitute -2 for x in the expression and then calculate the result.

First, let's substitute -2 for x:

4(-2)² - 4(-2) + 1 / 4(-2) - 2

Now, we need to perform the calculations step by step:

1. Calculate the value inside the parentheses: 4(-2)² = 4 * (-2) * (-2) = 4 * 4 = 16 4(-2) = -8

2. Simplify the expression: 16 - (-8) + 1 / (-8 - 2)

3. Continue simplification: 16 + 8 + 1 / -10

4. Calculate the division first: 25 / -10

5. The final result is: -2.5

So, the value of the expression 4x² - 4x + 1 / 4x - 2 when x = -2 is -2.5.