Advertisements
Advertisements
Question
Multiply the following:
(a2 – b2), (a2 + b2)
Sum
Advertisements
Solution
We have,
(a2 – b2) and (a2 + b2)
∴ (a2 – b2)(a2 + b2) = a2(a2 + b2) – b2(a2 + b2)
= a4 + a2b2 – b2a2 – b4
= a4 – b4
shaalaa.com
Is there an error in this question or solution?
Chapter 7: Algebraic Expression, Identities and Factorisation - Exercise [Page 231]
APPEARS IN
RELATED QUESTIONS
Factorise : 16p4 – 1
(7x + 3)(7x – 4) = 49x2 – 7x – 12
Using the identity (a + b)(a – b) = a2 – b2, find the following product
(6x + 7y)(6x – 7y)
Find the value of (x – y)(x + y)(x2 + y2)
a2 – b2 = (a + b) ______.
Using suitable identities, evaluate the following.
(9.7)2 – (0.3)2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
x2 – 9
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
4x2 – 49y2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
28ay2 – 175ax2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
y4 – 81
