factorise using difference of squares

(a) -25

do i use -2ab+

(b) 9 -4

do i use

and

Printable View

- Nov 18th 2009, 01:27 AMdecoy808difference of squares
factorise using difference of squares

(a) -25

do i use -2ab+

(b) 9 -4

do i use

and - Nov 18th 2009, 02:37 AMalexmahone