SOLUTION: Identify all real roots of x^3+x^2-34x+56=0 I worked it out to: 2, -3+ square root 11 and -3- square root 11. Am I correct?

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Identify all real roots of x^3+x^2-34x+56=0 I worked it out to: 2, -3+ square root 11 and -3- square root 11. Am I correct?      Log On


   

Question 184194This question is from textbook saxon algebra 2
: Identify all real roots of x^3+x^2-34x+56=0
I worked it out to: 2, -3+ square root 11 and -3- square root 11. Am I correct? This question is from textbook saxon algebra 2

Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
2 is correct. The others are not. See the URLS below for tools to factor
x%5E3%2Bx%5E2-34x%2B56=0
%28x-2%29%28x%5E2+%2B3x+-28%29=0
%28x-2%29%28x-4%29%28x%2B7%29=0
http://www.hostsrv.com/webmab/app1/MSP/quickmath/02/pageGenerate?site=quickmath&s1=algebra&s2=factor&s3=basic
http://www.calc101.com/webMathematica/long-divide.jsp#topdoit