Question
Thu September 19, 2013 By: Stuti
 

factorise x to the power 4 - 3x to the power 2 +2

Expert Reply
Fri September 20, 2013
x4 - 3x2 + 2
= x4 - x2 - 2x2 + 2
= x2 (x2 - 1) - 2(x2 - 1)
= (x2 - 1) (x2 - 2)
= (x - 1) (x + 1) (x - root 2) (x + root 2)
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