Question

3у2 + у - 2 = 0решите пожалуйста ​

Answer 1

Ответ:

решение смотри на фотографии

Answer 2

Ответ: 2/7

Пошаговое объяснение:

3у*2 + у - 2 = 0

6y+y-2=0

7y-2=0

7y=2

y=2/7

Answer 3

Solving the Equation 3u^2 + u - 2 = 0

To solve the equation 3u^2 + u - 2 = 0, we can use the quadratic formula, which states that for an equation of the form ax^2 + bx + c = 0, the solutions for x are given by:

x = (-b ± √(b^2 - 4ac)) / (2a)

In this case, a = 3, b = 1, and c = -2. Let's calculate the solutions using the quadratic formula.

Applying the Quadratic Formula

The solutions for u can be calculated using the quadratic formula as follows:

u = (-1 ± √(1^2 - 4*3*(-2))) / (2*3)

Calculating the Solutions

Let's calculate the discriminant (the value inside the square root) first:

Discriminant = b^2 - 4ac = 1^2 - 4*3*(-2) = 1 + 24 = 25

Now, we can calculate the solutions for u:

u = (-1 + √25) / 6 = (-1 + 5) / 6 = 4 / 6 = 2/3

u = (-1 - √25) / 6 = (-1 - 5) / 6 = -6 / 6 = -1

Conclusion

Therefore, the solutions for the equation 3u^2 + u - 2 = 0 are u = 2/3 and u = -1.