Math and Arithmetic

What is a quadratic equation?

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Answered 2011-01-24 20:37:46

A quadratic equation is an equation where a quadratic polynomial is equal to zero. It can be written as ax^2+bx+c=0 where a,b,c are the coefficients and x is the variable. A quadratic equation has always two complex solutions for x given by the formula x=-b/2a+sqrt(b^2-4ac)/2a and x=-b/2a-sqrt(b^2-4ac)/2a. Examples of quadratic equations are x^2+x-2=0, 5x^2+6x=0, x^2+1=0 etc.

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What are the different types of quadratic equation?

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How do you know if a equation is a quadratic one?

You know an equation is quadratic by looking at the degree of the highest power in the equation. If it is 2, then it is quadratic. so any equation or polynomial of the form: ax2 +bx+c=0 where a is NOT 0 and a, b and c are known as the quadratic coefficients is a quadratic equation.

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The quadratic formula is used to solve the quadratic equation. Many equations in which the variable is squared can be written as a quadratic equation, and then solved with the quadratic formula.

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No. [ y = 4x2 ] is a quadratic equation.

What is an equation that can be used in quadratic formula completing the square and factoring?

A quadratic equation.

What is the difference between quadratic equation and quadratic expression?

an equation has an equals sign.

What is a quadratic equation when graphed?

The graph (on Cartesian coordinates) of a quadratic equation is a parabola.

What is a quadratic equation in standard form called?

It is still called a quadratic equation!

The degree of a quadratic equation?

There are two degrees to a quadratic equation, as the x2 term is present. General form of a quadratic equation: Ax2+Bx+C

What is equadtratic equation?

A quadratic equation normally has 2 solutions and can be solved by using the quadratic equation formula.

What are the roots of the quadratic equation below?

That depends on the equation.

When solving a quadratic equation by factoring what method is used?

Using the quadratic equation formula is a method of solving quadratic equations.

How do you solve a quadratic equation graphically?

The roots of the quadratic equation are the x-intercepts of the curve.

What is the quadratic equation used for?

It is used to solve quadratic equations that cannot be factored. Usually you would factor a quadratic equation, identify the critical values and solve, but when you cannot factor you utilize the quadratic equation.

Can the answer to a quadratic equation be a decimal?

Yes. You can calculate the two roots of a quadratic equation by using the quadratic formula, and because there are square roots on the quadratic formula, and if the radicand is not a perfect square, so the answer to that equation has decimal.

What is the difference between quadratic formula and quadratic equation?

There are an infinite number of different quadratic equations. The quadratic formula is a single formula that can be used to find the pair of solutions to every quadratic equation.

How do you make a table of values for a quadratic equation?

Simply learn and use the quadratic equation formula.

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By using the quadratic equation formula

What is the solving for the roots of quadratic equation?

It is finding the values of the variable that make the quadratic equation true.

What're examples of quadratic equation?

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What are the methods use in solving quadratic equation?

By using the quadratic equation formula or by completing the square

Why do you use square roots to solve quadratic equations?

Because it's part of the quadratic equation formula in finding the roots of a quadratic equation.