Question

2х²-3х+7=0 помогите это путем дискриминант сделать пж​

Answer 1

Ответ:

2x^2-3x+7=0 D=(-3)^2-4*2*7=9-56=-47 Так как дискриминант отрицателен

Answer 2

D = b^2 - 4*a*c

D = (-3)^2 - 4*2*7 = 9 - 56 = -47

Т.к. дискриминант отрицательный, то корней нет

Ответ: корней нет

Answer 3

Solving the Quadratic Equation Using the Discriminant

To solve the quadratic equation 2x² - 3x + 7 = 0 using the discriminant, we can use the quadratic formula, which is given by:

x = (-b ± √(b² - 4ac)) / (2a)

Where: - a is the coefficient of x², - b is the coefficient of x, and - c is the constant term.

Calculating the Discriminant

The discriminant, denoted by Δ (delta), is calculated using the formula:

Δ = b² - 4ac

Applying the Quadratic Formula

Let's calculate the discriminant and then use the quadratic formula to find the solutions for the given equation 2x² - 3x + 7 = 0.

First, we need to identify the values of a, b, and c: - a = 2 - b = -3 - c = 7

Calculating the Discriminant (Δ)

Using the values of a, b, and c, we can calculate the discriminant:

Δ = (-3)² - 4 * 2 * 7 Δ = 9 - 56 Δ = -47

Finding the Solutions

Now, we can use the quadratic formula to find the solutions for the given equation:

x = (-(-3) ± √(-47)) / (2 * 2) x = (3 ± √(-47)) / 4

Since the discriminant is negative, the solutions will involve complex numbers.

Conclusion

The solutions to the equation 2x² - 3x + 7 = 0 using the discriminant are: x = (3 + √(-47)) / 4 and x = (3 - √(-47)) / 4

These solutions involve complex numbers due to the negative discriminant.

I hope this helps! If you have any further questions or need additional assistance, feel free to ask.