Advertisements
Advertisements
Question
(a + b)(a – b) = a2 – b2
Options
True
False
Advertisements
Solution
This statement is True.
Explanation:
We know that,
(a + b)(a – b) = a × a – a × b + b × a – b × b
= a2 – b2
= a2 – ab + ba – b2
APPEARS IN
RELATED QUESTIONS
Factorise the following algebraic expression by using the identity a2 – b2 = (a + b)(a – b)
z2 – 16
Factorise the following algebraic expression by using the identity a2 – b2 = (a + b)(a – b)
9 – 4y2
Using identity, find the value of (1.9) × (2.1)
Factorise: 4x2 – 9y2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`(2p^2)/25 - 32q^2`
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`x^2/8 - y^2/18`
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`1/36a^2b^2 - 16/49b^2c^2`
The sum of (x + 5) observations is x4 – 625. Find the mean of the observations.
The base of a parallelogram is (2x + 3 units) and the corresponding height is (2x – 3 units). Find the area of the parallelogram in terms of x. What will be the area of parallelogram of x = 30 units?
Find the value of a, if pq2a = (4pq + 3q)2 – (4pq – 3q)2
