Question

-8-2×(1-x)=3 Найти x...

Answer 1

-8 - 2 × ( 1 - х ) = 3

-8 - 2 + 2х = 3

2х = 3 + 8 + 2

2х = 13

х = 13 ÷ 2

х = 6,5.

Ответ : х = 6,5.

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Answer 2

Ответ:

Пошаговое объяснение:

-8-2×(1-x)=3

-8-2+2х=3

2х=3+2+8

2х=13

х=13:2

х=6.5

Answer 3

To find the value of x in the equation -8 - 2x(1 - x) = 3, you can follow these steps:

Step 1: Distribute the multiplication on the left side of the equation: -8 - 2x + 2x^2 = 3

Step 2: Move all terms to one side of the equation to set it equal to zero: 2x^2 - 2x - 11 = 0

Step 3: Now we have a quadratic equation in standard form (ax^2 + bx + c = 0), where a = 2, b = -2, and c = -11.

Step 4: Use the quadratic formula to solve for x: The quadratic formula is given by x = (-b ± √(b^2 - 4ac)) / 2a

In our case, a = 2, b = -2, and c = -11: x = (2 ± √((-2)^2 - 42(-11))) / 2*2 x = (2 ± √(4 + 88)) / 4 x = (2 ± √92) / 4

Step 5: Simplify the square root: x = (2 ± √(4 * 23)) / 4 x = (2 ± 2√23) / 4 x = (1 ± √23) / 2

So the two solutions for x are:

1. x = (1 + √23) / 2
2. x = (1 - √23) / 2

These are the two possible values for x that satisfy the given equation.