Contents

- 1 What is quadratic equation in simple words?
- 2 What is the quadratic equation and what is it used for?
- 3 How many types of quadratic equations are there?
- 4 How do you write a quadratic equation?
- 5 What are real life examples of quadratic equations?
- 6 Who uses quadratic equations in real life?
- 7 Why do we learn quadratic equations?
- 8 What are the 3 forms of quadratic equations?
- 9 What are the 3 methods of solving quadratic equations?
- 10 What are the 4 methods of solving quadratic equations?
- 11 How do you write a quadratic equation from a word problem?

## What is quadratic equation in simple words?

A quadratic equation is an equation of the second degree, meaning it contains at least one term that is squared. The standard form is ax² + bx + c = 0 with a, b, and c being constants, or numerical coefficients, and x is an unknown variable. One absolute rule is that the first constant “a” cannot be a zero.

## What is the quadratic equation and what is it used for?

Quadratic equations are actually used in everyday life, as when calculating areas, determining a product’s profit or formulating the speed of an object. Quadratic equations refer to equations with at least one squared variable, with the most standard form being ax² + bx + c = 0.

## How many types of quadratic equations are there?

Two Different Forms of Quadratic Equations.

## How do you write a quadratic equation?

Formation of the Quadratic Equation whose Roots are Given

- α + β = – ba and αβ = ca.
- ⇒ x2 + bax + ca = 0 (Since, a ≠ 0)
- ⇒ x2 – (α + β)x + αβ = 0, [Since, α + β = -ba and αβ = ca]

## What are real life examples of quadratic equations?

There are many real – world situations that deal with quadratics and parabolas. Throwing a ball, shooting a cannon, diving from a platform and hitting a golf ball are all examples of situations that can be modeled by quadratic functions.

## Who uses quadratic equations in real life?

For a parabolic mirror, a reflecting telescope or a satellite dish, the shape is defined by a quadratic equation. Quadratic equations are also needed when studying lenses and curved mirrors. And many questions involving time, distance and speed need quadratic equations.

## Why do we learn quadratic equations?

The equation is used to find shapes, circles, ellipses, parabolas, and more. It also used to design any object that has curves and any specific curved shape needed for a project. The military uses the quadratic equation when they want to predict where artillery shells hit the earth or target when fired from cannons.

## What are the 3 forms of quadratic equations?

Here are the three forms a quadratic equation should be written in:

- 1) Standard form: y = ax2 + bx + c where the a,b, and c are just numbers.
- 2) Factored form: y = (ax + c)(bx + d) again the a,b,c, and d are just numbers.
- 3 ) Vertex form: y = a(x + b)2 + c again the a, b, and c are just numbers.

## What are the 3 methods of solving quadratic equations?

There are three basic methods for solving quadratic equations: factoring, using the quadratic formula, and completing the square.

## What are the 4 methods of solving quadratic equations?

The four methods of solving a quadratic equation are factoring, using the square roots, completing the square and the quadratic formula.

## How do you write a quadratic equation from a word problem?

Step I: Denote the unknown quantities by x, y etc. Step II: use the conditions of the problem to establish in unknown quantities. Step III: Use the equations to establish one quadratic equation in one unknown. Step IV: Solve this equation to obtain the value of the unknown in the set to which it belongs.