Question

9х^2=-25-30хрешите пожалуйста через дискриминант,умоляю,умоляю​

Answer 1

Ответ:

9x2 + 25 + 30x

d = 900 - 900 = 0

x = -30/18

Объяснение:

-30/18

Answer 2

Ответ:

-5/3

Объяснение:

9х^2=-25-30х

9x^2+25+30x=0

D=b^2-4ac

D=30×30-9×25×4 900-900=0

x =-30/18

x=-5/3

Answer 3

Solving the Quadratic Equation Using the Discriminant

To solve the quadratic equation 9x^2 = -25 - 30x using the discriminant, we can follow these steps:

1. First, we need to rewrite the equation in the standard form ax^2 + bx + c = 0. 2. Then, we can identify the values of a, b, and c to use in the quadratic formula. 3. Finally, we can calculate the discriminant and use it to find the solutions for x.

Step 1: Rewrite the Equation in Standard Form

The given equation is 9x^2 = -25 - 30x. To rewrite it in the standard form, we need to move all the terms to one side of the equation to set it equal to zero. This gives us:

9x^2 + 30x + 25 = 0

Now, we can identify the values of a, b, and c for the quadratic formula:

- a = 9 - b = 30 - c = 25

Step 2: Calculate the Discriminant

The discriminant, denoted by Δ (delta), is calculated using the formula Δ = b^2 - 4ac.

Substituting the values of a, b, and c into the formula, we get:

Δ = (30)^2 - 4(9)(25)

Calculating this gives us the value of the discriminant.

Step 3: Find the Solutions for x

After calculating the discriminant, we can use it to find the solutions for x using the quadratic formula:

x = (-b ± √Δ) / (2a)

Substitute the values of a, b, and Δ into the quadratic formula to find the solutions for x.

I hope this helps! Let me know if you need further assistance with the calculations or anything else.