Question

PLEASE HELP. x^4−x^3−13x^2+x+12. solve for all the real zeros.

Answer 1

@jim_thompson5910

Answer 2

http://www.wolframalpha.com/input/?i=+x^4%E2%88%92x^3%E2%88%9213x^2%2Bx%2B12

Answer 3

if you don't want to cheat, try the obvious possibilities first. for example try \(f(1)\) which is easiest

Answer 4

thanks its fine

Answer 5

\[f((x)= x^4−x^3−13x^2+x+12\]
\[f(1)=1-1-13+1+12=0\] works, which gives you one zero right off the bat