x^2 +1/x^2-11 factorise
Answers
Answered by
3
x2+1/x2 -11
= (x)2+ (1/x)2 - 2 - 9
= (x)2+ (1/x)2 - 2*x*1/x - (3)2
= (x - 1/x)2- (3)2
= (x - 1/x + 3) (x - 1/x - 3).
Similar questions