## What is the formula of quadratic function?

A quadratic function is one of the form f(x) = ax2 + bx + c, where a, b, and c are numbers with a not equal to zero. The graph of a quadratic function is a curve called a parabola.

## What are the different representations of a quadratic functions give 4 examples?

Quadratic Function Examples Let us see a few examples of quadratic functions: f(x) = 2×2 + 4x – 5; Here a = 2, b = 4, c = -5. f(x) = 3×2 – 9; Here a = 3, b = 0, c = -9. f(x) = x2 – x; Here a = 1, b = -1, c = 0.

**Which of the following is a quadratic formula?**

The standard form of a quadratic is y = ax^2 + bx + c, where a, b, and c are numbers and a cannot be 0. Examples of quadratic equations include all of these: y = x^2 + 3x + 1. y = x^2.

**Which of the following are quadratic equation x2 6x 4 0?**

∴ The equation x2−6x+4=0 is quadratic equation.

### How do you use the quadratic formula to solve equations?

The quadratic formula is: x = −b ± √b2 − 4ac 2a x = – b ± b 2 – 4 a c 2 a You can use this formula to solve quadratic equations. Or, if your equation factored, then you can use the quadratic formula to test if your solutions of the quadratic equation are correct.

### How do you use the quadratic formula to find the discriminant?

You can use this formula to solve quadratic equations. Or, if your equation factored, then you can use the quadratic formula to test if your solutions of the quadratic equation are correct. The expression b2 − 4ac b 2 – 4 a c, which is under the √ (sqrt) inside the quadratic formula is called the discriminant.

**How do you factor quadratic equations in standard form?**

Consider a quadratic equation in standard form: ax2 + bx + c = 0 a x 2 + b x + c = 0 You may also see the standard form called a general quadratic equation, or the general form. So long as a ≠ 0 a ≠ 0, you should be able to factor the quadratic equation.

**How do you Untangle a quadratic equation?**

Let’s start with an easy quadratic equation: For the Quadratic Formula to apply, the equation you are untangling needs to be in the form that puts all variables on one side of the equals sign and 0 on the other: Our quadratic equation will factor, so it is a great place to start.