Wednesday

April 23, 2014

April 23, 2014

Posted by **william** on Monday, January 14, 2008 at 12:14pm.

i got (x-1)(3x-1)(3x^2+3)

but the answer is (x-1)(3x-1)(x+i)(x-i)

- math -
**Reiny**, Monday, January 14, 2008 at 1:08pmYou should have realized your answer was wrong by looking at the constants of your three factors.

Multiplying them would have given you a last term of +3 instead of the needed +1.

You were close, actually you are off by only a constant factor of 3

Look at your last factor of (3x^2+3)

=3(x^2+1)

=3(x+i)(x-i)

Compare that with the actual answer given.

Looks like you just made an arthmetic error somewhere in your division.

- math -
**Count Iblis**, Monday, January 14, 2008 at 1:10pm3x^2+3 = 3 x(x^2 + 1) = 3(x+i)(x-i)

You only got an overall factor of 3 wrong.

- math -
**william**, Monday, January 14, 2008 at 1:21pmwhere does the "3" go then?

3x^2+3 = 3 x(x^2 + 1) =

"3"(x+i)(x-i)

because the answer is:

(x-1)(3x-1)(x+i)(x-i)

**Related Questions**

bobpursley,math - about this problem , I figured it out and i did get the answer...

calc - 6(4x+3)^5(4)(3x-5)^5+ 5(3x-5)^4(3)(4X+3)^6 common factors: (4x+3)^5 (3x-5...

math,bobpursly, - 4x-2x^2+4x^3 from 4x^3+x-3x^2 4x^3+x-3x^2 -( 4x-2x^2+4x^3) ...

algebra - simplify (6x^3-16x^2+11x-5)/(3x-2) (3x-2)(2x-1)^2-3 my muliple choice ...

mathh - Let f(x)=x+2 Ix-3I and g(x)=3x-1 Find all solutions to the equation f(g(...

math - sums and differences of rational algebraic expression please answer the ...

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

8th Grade Algebra: Answer Check #2 - Add or Subtract (Radicals) { this means ...

Math - Can you check these questions for me? 1. Add: (3x^4-x+2)+(9x^5-x^2+x) 9x^...

Find the minimum/maximum - The question is as followed: y=-3x^2 + 4x This is how...