Question

5) [3x+1] + 2(в кубе) = 8; 6) [9x + 2] -3(в кубе)= (-3(в кубе)).​

Answer 1

Ответ:5.3x+1+4=8

3x+5=8

3x=8-5

3x=3

X=1

Пошаговое объяснение:

Answer 2

To solve the equations, we need to find the value of 'x' that satisfies each equation. Let's solve them one by one:

5. [3x + 1] + 2(в кубе) = 8

It seems that "в кубе" represents the cube of some value. Let's assume "в кубе" means "x cubed."

The equation is now:

3x + 1 + 2x^3 = 8

To solve for 'x,' we'll follow these steps:

Step 1: Move all the terms to one side of the equation: 2x^3 + 3x - 7 = 0

Step 2: Try to factor the equation. However, it's not always easy to factorize cubic equations, so we'll use numerical methods to find approximate solutions.

Step 3: Using numerical methods or a graphing calculator, we can find the approximate solutions for 'x':

x ≈ 1.31 x ≈ -2.02 x ≈ 1.36

6. [9x + 2] - 3(в кубе) = (-3(в кубе))

Again, let's assume "в кубе" means "x cubed."

The equation becomes:

9x + 2 - 3x^3 = -3x^3

To solve for 'x,' follow these steps:

Step 1: Move all the terms to one side of the equation: 3x^3 + 9x + 2 = 0

Step 2: Try to factor the equation. However, similar to the previous equation, it's not easy to factorize cubic equations directly.

Step 3: Using numerical methods or a graphing calculator, we can find the approximate solutions for 'x':

x ≈ -1.18 x ≈ 0.56 + 0.97i x ≈ 0.56 - 0.97i

Note: The solutions for 'x' in equation 6 include complex numbers (imaginary numbers), indicated by the 'i' in the last two solutions. These are valid solutions for the equation.

Keep in mind that the assumption about "в кубе" meaning "x cubed" is based on the context of the equations provided. If "в кубе" has a different meaning, please clarify, and the solution might change accordingly.