**Is an extraneous solution because it is a possible solution that does not check? **

**Do you always have to check for extraneous solutions?** You only need to worry about the extraneous root in the case of a quadratic equation if you made the equation quadratic by multiplying by a variable. Any time you square a negative number or a variable (which may be negative), you risk losing information by making it positive.

**How do you know if a solution is extraneous?** To determine if a solution is extraneous, we simply plug the solution into the original equation. If it makes a true statement, then it is not an

**Is extraneous solution is a solution that does not answer the given problem?** In mathematics, an extraneous solution (or spurious solution) is a solution, such as that to an equation, that emerges from the process of solving the problem but is not a valid solution to the problem.

## Is an extraneous solution because it is a possible solution that does not check? – Related Questions

### What is an extraneous solution example?

An extraneous solution is a root of a transformed equation that is not a root of the original equation because it was excluded from the domain of the original equation. Example 1: Solve for x , 1x − 2+1x + 2=4(x − 2)(x + 2) .

### What can cause an extraneous solution?

In general, extraneous solutions arise when we perform non-invertible operations on both sides of an equation. (That is, they sometimes arise, but not always.) Squaring (or raising to any other even power) is a non-invertible operation.

### Is it necessary for Woo Jin to check his answers for extraneous?

An extraneous solution is a root of a transformed equation which is not a root of the original equation because it was not included in the domain of the original equation. Since cube roots do not give two solutions when solved, it is not necessary to check his answers for extraneous solutions.

### What is an extraneous solution to a rational equation?

1) Extraneous solution – An x-value that makes the equation undefined, or solutions that make any denominator equal to 0.

### What is an extraneous solution logarithmic equations?

An extraneous solution is a number for which an original equation is either undefined or false, but for which a later equation is true. Extraneous solutions are caused by actions that can take a false (or undefined) equation to a true equation.

### Can both solutions be extraneous?

This can happen when a step in the solution process is not strictly reversible, for example, if both sides of an equation are squared at some point. Solving this equation leads (initially) to two solutions. In the first step both sides of the equation are squared. We call x=-2 an extraneous solution.

### What is a valid solution?

A solution to an algebra problem is valid if both sides of the equation are still equal when the problem has been worked out with the chosen solution substituted for the variable(s).

### What is an extraneous solution simple definition?

Extraneous solutions are values that we get when solving equations that aren’t really solutions to the equation.

### What is a extraneous sentence?

Definition of Extraneous. not essential or coming from the outside. Examples of Extraneous in a sentence. 1. Because of so many extraneous details in the instructions, Dad wasn’t able to put the toy together in time for Christmas morning.

### How do you check for extraneous roots?

Example: you work on an equation and come up with two roots (where it equals zero): “a” and “b”. When you put “a” into the original equation it becomes zero, but when you put in “b” it doesn’t. So “b” is an extraneous root.

### What is the difference between an extraneous solution and an incorrect solution?

2 Answers By Expert Tutors

Extraneous solutions appear to be valid solutions, but when checked back into the original equation they give a false result. You must exclude extraneous solutions from your answer. No solution means there is no value that can make the statement true.

### What is extraneous solution trigonometry?

An extraneous solution is a root of a transformed equation that is not a root of the original equation because it was exclude from the domain of the original equation.

### What is the extraneous?

1 : existing on or coming from the outside extraneous light. 2a : not forming an essential or vital part extraneous ornamentation. b : having no relevance an extraneous digression. 3 : being a number obtained in solving an equation that is not a solution of the equation extraneous roots.

### Why is it important to check all solutions to radical equations?

When solving a radical equation, it is important to always check your answer by substituting the value back into the original equation. If you get a true statement, then that value is a solution; if you get a false statement, then that value is not a solution.

### Do all rational equations have at least one solution?

When dealing with rational expressions and equations, we’re not allowed to divide by zero. When there are variables in denominators, we then will have certain values which can cause division by zero. And it is perfectly possible that a given equation will have no solution at all.

### How do you tell if a rational equation has no solution?

Be sure to ALWAYS check your answers in the original equation to be sure they do not result in a denominator of zero. If they do, they are not valid answers. If you only have one solution, and it is not valid, then you now have NO SOLUTION.

### Can a logarithmic equation have more than one extraneous solution?

A logarithmic equation can have at most one extraneous solution.

### How do you verify no solution?

Solve the first equation. Solve the second equation. If we substitute these two solutions back to the original equation, the results are positive answers and can never be equal to negative one. The answer is no solution.

### Why do extraneous roots exist?

The reason extraneous solutions exist is because some operations produce ‘extra’ answers, and sometimes, these operations are a part of the path to solving the problem. When we get these ‘extra’ answers, they usually don’t work when we try to plug them back into the original problem.

### Is extra short for extraneous?

As adjectives the difference between extraneous and extra

is that extraneous is not belonging to, or dependent upon, a thing; without or beyond a thing; foreign while extra is beyond what is due, usual, expected, or necessary; extraneous; additional; supernumerary.

### What is the formula of trigonometry?

It says that c2, the square of one side of the triangle, is equal to a2 + b2, the sum of the squares of the the other two sides, minus 2ab cos C, twice their product times the cosine of the opposite angle. When the angle C is right, it becomes the Pythagorean formula.