Question 165553
(e-1)^3=e^3-91 __ (e-1)(e^2-2e+1)=e^3-91 __ e^3-2e^2+e-e^2+2e-1=e^3-91


subtracting e^3-91 __ -3e^2+3e+90=0 __ dividing by -3 __ e^2-e-30=0


factoring __ (e+5)(e-6)=0


e+5=0 __ e=-5 __ negative value not realistic


e-6=0 __ e=6