Advertisements
Advertisements
Question
Factorise: (a - 3b)2 - 36 b2
Sum
Advertisements
Solution
(a - 3b)2 - 36 b2
= (a - 3b)2 - (6b)2
= (a - 3b + 6b) (a - 3b - 6b)
= (a + 3b)(a - 9b) ....[a2 - b2 = (a + b)(a - b)]
shaalaa.com
Factorisation by Difference of Two Squares
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Factorise: 16 - 9x2
Factorise: (a+ 2b)2 - a2
Factorise: (5a - 3b)2 - 16b2
Factorise: 1 - 25 (a+ b)2
Factorise: 4(2a + b)2 - (a - b)2
Factorise: 25(2x + y)2 - 16(x - y)2
factorise : a2 - (b - c)2
factorise : 16(5x + 4)2 -9(3x - 2)2
factorise: 25(x - 2y)2 - 4
Factorise a2b − b3. Using this result, find the value of 1012 × 100 − 1003.
