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: 1 - 100a2
Factorise: 1 - 25 (a+ b)2
Factorise: 49(x - y)2 -9(2x + y)2
Factorise: `(7 3/10)^2 - (2 1/10)^2`
factorise: x2 + 6x + 9 - 4y2
factorise : 25(2x - y)2 - 16(x - 2y)2
factorise : 16(5x + 4)2 -9(3x - 2)2
Factorise: `9x^2 - 1/16`
Factorise: 15(2x - y)2 - 16(2x - y) - 15
Factorise a2b − b3. Using this result, find the value of 1012 × 100 − 1003.
