hi i need to know how to factorise this:

Attachment 20407

i know if it was 2x^2 - 121 it would = (x+11) (x-11)

so for this one would it be (2x +11) (2x-11) ???

if not could you please tell me where im going wrong!

Thanks!

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- January 12th 2011, 07:51 AMandyboy179factorise, hard
hi i need to know how to factorise this:

Attachment 20407

i know if it was 2x^2 - 121 it would = (x+11) (x-11)

so for this one would it be (2x +11) (2x-11) ???

if not could you please tell me where im going wrong!

Thanks! - January 12th 2011, 07:57 AMAmer
- January 12th 2011, 10:35 AMHallsofIvy
In general, [tex]a^2- b^2= (a- b)(a+ b)/[tex]

Actually, ,**not**. I presume that was a mis-type.

so, yes, .