Question

Factorize x^4-11x^2-1

Answer 1

sory its x^4-11x^2+1

Answer 2

sorry I don't think it factorises.... may be a typo

Answer 3

It is a quadratic equation where x^2 = y. Use the quadratic formula to figure the roots.

Answer 4

but then you have u^2 - 11u + 1 which won't factorise

Answer 5

don't rely only on "factorizing" by ease. Quadratic formula does generate factors you know.

Answer 6

it will factorize, \[b^2-4ac >0\]

Answer 7

lol..this is strange as the solution is

\[(x + (11 +\sqrt{117})/2) (x + (11 - \sqrt{117})/2)\]

lol...

Answer 8

glad its not my class

Answer 9

:) Not all factors are "clean as a whistle integers". In real life, they are even worse.