Sunday

April 20, 2014

April 20, 2014

Posted by **theresa** on Saturday, January 27, 2007 at 8:16am.

You can check them by putting in x=1/4 (the second answer), and then x=+- sqrt(1/3) These are three answers that need to be checked.

If the equation balances, the answers are correct.

The other way of checking it is to graph

y=7x^3-x+1-x^3-3x^2-x. yes, combine the terms. Where y is zero, ie, crossing the x axis, that is a real solution.

**Related Questions**

Math - Can someone please check my answers below for accurateness? The ...

Math - I have 4 math problems that need to be solved by using factoring. I am ...

Rational Expression - (x+1/2x-1 - x-1/2x+1) * (2x-1/x - 2x-1/x^2) (x+1/2x-1 - x-...

Easy (yet confusing) Algebra - These problems are pretty easy, but confusing (as...

Derivative Calculus - I just need my answers checked. 1) Find the derivative. f(...

Algebra - Can someone check my algebra answers and help me with the problems I ...

Math for Trish To Help Me With - Factor the following. You will earn 5 points ...

check math - Here are my answers. Can you check if I got the right answers? ...

Grade 10 Math - I've missed quite alot of school because I was sick and when I ...

Intermediate Algebra - Am I going in the right track? 8x -1/x + 5x - 3/2x = 16x^...