Question 92 (xvi)
Factorise the following using the identity a2−b2=(a+b)(a−b).
1331x3y−11y3x
1331x3y−11y3x=(11)3x3y−11y3x=11xy(112x2−y2)=11xy[(11x)2−y2]=11xy(11x+y)(11x−y)
Question 92 (iv)
3a2b3−27a4b
Question 92 (xxix)
8a3−2a
Question 92 (vi)
9x2−1
Question 92 (xxvi)
(a−b)2−(b−c)2