Sunday

April 19, 2015

April 19, 2015

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

CHEMISTRY - Post a New Question Current Questions Homework Help: Chemistry ...

Chemistry - how many moles of O2 would be needed to produce 1120.5 kJ of heat ...

Math - 1)Solve sin2x=3cosx for all values of x. What do I need to do? 2)Solve e(...

Math help please - 1. Solve for x. 4(x - b) = x b = 4/3x b = 3/4x x = 4/3b x = 3...

calculus - Find equations for two lines through the origin that are tangent to ...

Math - solve the equation: 1/3+5/27=4/9-8m-2/3+9m+2/27 please please please i ...

Math, Please Help! I don't understand! - I need help because I don't understand ...

Math - I SERIOUSLY need help! Solve the linear system by using substitution. x=6...

Math - I really, really need help! Solve for the indicated variable. 8x+4y=12 ...

Math - PLEASE HELP!!!NEED TO SOLVE: 5-(3)<10(-3)= 3<2x+1<9= 13<3x+5&...