SOLUTION: how do i find the x- intercepts of -x^4+1.5x^3+8x^2-1.5x-7?

Question 118487This question is from textbook Mcdougal Littell Algebra 2
: how do i find the x- intercepts of -x^4+1.5x^3+8x^2-1.5x-7? This question is from textbook Mcdougal Littell Algebra 2

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
how do i find the x- intercepts of -x^4+1.5x^3+8x^2-1.5x-7?
-------------
The coefficients add to zero so x=1 is a zero;
1)....-1....1.5....8....-1.5...-7
.......-1.....0.5...8.5....7...|..0
Quotient: -x^3+0.5x^2+8.5x+7
-----------
x=-1 is a zero
-------
-1....-1....0.5....8.5....7....1
........-1... 1.5....7...|..0
Quotient: -x^2+1.5x+7
------------
x=-2 is a zero
-2)....-1....1.5....7
.........-1...3.5..|..0
Quotient: -x+3.5
----
Since -x+3.5 = 0 , the final zero is 3/5 or 7/2
====================
Cheers,
Stan H.

RELATED QUESTIONS
How do I find the solutions and x-intercepts of... (answered by nerdybill)

Find the x-intercepts y = x^2 + 5x + 2 How do I find the x intercept? (answered by ankor@dixie-net.com,bucky)

how do i reduce these equations 8x^2 - 50y^2 __________________ 8x^2 - 18XY -5y^2 (answered by solver91311)

How do I find the domain of the function... (answered by Fombitz)

Find the inverse of the function. {{{f(x) = (-5x+4)/(-8x-7)}}} I know the answer is (answered by jim_thompson5910)

find the inverse and check. h(x)= 1/3 x + 1 h(x)= 7/8x-2 d(x)=... (answered by jankiz)

what is the value of x in this linear equation... (answered by solver91311)

Simplify (3 / x^2 - 5x + 4) + (2 / x^2 - 1) how do I do this (answered by MathLover1)

(8x + 3)(x^2 - 5x +... (answered by oscargut)