Question 92 (xxvi)
Factorise the following using the identity a2−b2=(a+b)(a−b).
(a−b)2−(b−c)2
(a−b)2−(b−c)2=(a−b+b−c)(a−b−b+c)=(a−c)(a−2b+c)
Question 92 (xxv)
16x4−625y4
Question 92 (v)
28ay2−175ax2
Question 92 (vii)
25ax2−25a
Question 92 (i)
x2−9