# Write a rational equation that has 3 as a solution

We want to obtain an equivalent equation in which all terms containing x are in one member and all terms not containing x are in the other.

We have however, managed to find a vertical asymptote already. Solution Dividing both members by -4 yields In solving equations, we use the above property to produce equivalent equations in which the variable has a coefficient of 1.

Use the division property to obtain a coefficient of 1 for the variable.

Here is a sketch of this graph. Since we have a quadratic, we have to move everything to one side and set it to 0. Focusing on the denominators, the LCD should be 6x.

Use it as a multiplier to both sides of the rational equation. What are you asked to find? Combine like terms in each member of an equation. Divide both sides by the coefficient of x. I hope you get this linear equation after performing some cancellations.

The problem is reduced to a regular linear equation from a quadratic. If you replace the equal sign of an equation with an inequality sign, is there ever a time when the same value will Math What are Fractions?

The formula above can also be derived by using the concept that you can figure out how much of the job the girls do per hour or whatever the time unit isboth together and alone. The last example shows this. Multiply the constants into the parenthesis.

Again, always check the solved answers back into the original equations to make sure they are valid. If you replace the equal sign of an equation with an inequality sign, is there ever a time when the same value will math How do you know if a value is a solution for an inequality?

So then we have… Factor out the denominators completely. Whew — that was a tough one!!

Instructional Implications Explain to the student that writing and solving an equation is an effective strategy for solving mathematical problems.

Start by determining the LCD. Get rid of the parenthesis by the distributive property. This line is called a vertical asymptote. Multiply each unique term with the highest power to determine the LCD. Solution Multiplying each member by 6 yields In solving equations, we use the above property to produce equivalent equations that are free of fractions.

Almost There The student is unable to use the equation to solve the problem.Equations that contain rational expressions are called rational killarney10mile.com example, $\frac{2x+1}{4}=\frac{x}{3}$ is a rational equation. Rational equations can be useful for representing real-life situations and for finding answers to real problems.

Solving Polynomial Equations. If this was an equation to solve, write down the roots. If it was a polynomial to factor, write it in factored form, including any constant factors you took out in step 1. When your equation has no more rational roots (or your polynomial has no more rational factors), you can turn to numerical methods to.

Solving Rational Equations. We should check our solution in the original rational expression: The solution checks, and since x = 8 does not result in division by 0, the solution is valid.

When the terms in a rational equation have unlike denominators, solving the equation will involve some extra work.

Here’s an example. Solving Rational Equations. Intro Harder Probs Graphs. Purplemath. Since the only possible solution causes division by zero, then this equation really has no solution.

My answer then is: no solution. It doesn't look like I did anything wrong, mathematically, in the previous exercise. So how did I end up with an entirely invalid solution? Feb 22,  · The following rational equation has denominators that contain variables.

For this equation, a. Write the value or - Answered by a verified Math Tutor or Teacher5/5. A quadratic equation that has only one rational solution will be one where: The discriminant equates to 0.

(the expression underneath the square root sign will equal 0) This means that the curve will not cross the x-axis in two places.

Write a rational equation that has 3 as a solution
Rated 5/5 based on 9 review