Advertisements
Advertisements
प्रश्न
Factorise the following by the difference of two squares:
441 - 81y2
योग
Advertisements
उत्तर
441 - 81y2
= (21)2 - (9y)2
= (21 - 9y)(21 + 9y)
= 3(7 - 3y)3(7 + 3y)
= 9(7 - 3y)(7 + 3y).
shaalaa.com
Method of Factorisation : Difference of Two Squares
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Factorise : 3a5 - 108a3
Factorise : a3 + 2a2 - a - 2
Factorise : 4a2 - 49b2 + 2a - 7b
Factorise : `x^2 + 1/x^2 - 11`
Factorise : 4x4 - x2 - 12x - 36
Factorise the following by the difference of two squares:
x6 - 196
Factorise the following by the difference of two squares:
625 - b2
Factorise the following by the difference of two squares:
(x - 2y)2 -z2
Factorise the following:
(2a - b)2 -9(3c - d)2
Factorise the following:
(a2 – b2)(c2 – d2) – 4abcd
