Saturday

April 19, 2014

April 19, 2014

Posted by **Robert** on Monday, January 21, 2008 at 2:14pm.

(8x^3 ) - (168x^2) + ( 864x) = 1120

please >>>>>>>>>> I need it >>> please

- math -
**Reiny**, Monday, January 21, 2008 at 2:40pm(8x^3 ) - (168x^2) + ( 864x) = 1120 divide by 8

(x^3 ) - (21x^2) + ( 108x) - 140 = 0

I tried x = 2 and it worked, so x-2 is a factor

using synthetic division I founs

(x-2)(x^2- 19x + 70) = 0

(x-2)(x-14)(x-5)=0

so x 2, x = 14, or x = 5

**Related Questions**

Geometry - Given circle A with circumference 20 pi and the length of arc KD ...

Logic - Can someone please help me solve these problems? I have to use the 17 ...

Economics - I am on the chapter for International Trade in the book. I neew to ...

Sabian - If air resistance offered to the motion of a projectile by the ...

Pre-Cal. - Describe the end behavior of f(x)=2x^4-5x+1: A. x-->, f(x)-->...

Math - help please anyone? i'm having a hard time solvig these problems LOGIC ...

Philosophy (Logic) - I need help constructing a formal proof of validity for the...

Economics - I have the following question in my assignment: The cost of ...

logic - I need help proving these arguments using rules of inference, please. (S...

Re: Physics/Math - A can of sardines is made to move along an x axis from x1 = ...