Tuesday

October 21, 2014

October 21, 2014

Posted by **Jeremy** on Wednesday, March 7, 2012 at 5:51pm.

(x^3 + 3x^2 - 2x+7)/(x+1)=11

I don't how how to solve this at all-the answer should be 11 but I don't have a clue how to get it-please show me this one so I can hopefully do my homeowrk-we did this in class today but I don't understand it

- Algebra -
**Steve**, Wednesday, March 7, 2012 at 7:32pmwell, disallowing x = -1 because that would cause division by zero, just solve

x^3 + 3x^2 - 2x + 7 = 11x + 11

x^3 + 3x^2 - 13x - 4 = 0

cubics aren't easy to solve in general, so look first for low-hanging fruit: +/- 1,2,4

Hmm. No joy there. Some iterative method, or wolframalpha will provide the three real roots:

-5.3, -0.3, 2.6

If the answer is 11, there's a typo somewhere in the problem. f(11) = 139.9

**Answer this Question**

**Related Questions**

Honors Algebra 2 - i have no clue how to solve this!! the problem is... 20x^3 - ...

Algebra 2 - I have no clue on this one. How would you solve: us the (IN) key to ...

English - In my sentence I typed, "I did not have a clue what to expect," and ...

math (college algebra) - Ok I have two questions I have NO CLUE how to complete ...

math 116 algebra 1A - can someon help please. why is it important that you ...

Honors Chemistry - In my vocabulary crossword puzzle, I have one clue answer ...

algebra - 3/0 =? the answer is 0 but my options are to solve the equation if ...

5th grade Math - Clue 1: i am greater than 100,000, but less than 120,000. Clue ...

Geometry - How would you solve v=PIr2h? Solve for h? I have no clue how to do ...

college algebra--please - I am not understanding this question and I have read ...