Question 389501
 {{{x^4 + 8x^3 + 15x^2 - 2x - 10 = (x+5)(x+1)(x^2 + 2x - 2) = 0}}}.
The roots from the linear factors are -5 and -1.  The roots from the irreducible quadratic are {{{x = (-2 +- sqrt( 2^2-4*1*-2 ))/2 = -1+-sqrt(3) }}} .








(Well, I saw this coming, hehe.  I guess if you're a tutor you don't need any tutoring, do you?)