Advertisements
Advertisements
Question
a2 – b2 = (a + b) ______.
Solution 1
a2 – b2 = (a + b) (a – b).
Explanation:
We have, a2 – b2 = (a + b)(a – b) ...[∵ a2 – b2 = (a + b)(a – b)]
Solution 2
a2 – b2 = (a + b) (a – b).
Explanation:
Let (a2 – b2) = (a + b)x
⇒ `x = (a^2 - b^2)/(a + b)`
= `((a + b)(a - b))/(a + b)`
= a – b
APPEARS IN
RELATED QUESTIONS
Factorise the following expressions
m2 + m – 72
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)
25a2 – 49b2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`y^3 - y/9`
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`(4x^2)/9 - (9y^2)/16`
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
y4 – 81
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
(a – b)2 – (b – c)2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
(x + y)4 – (x – y)4
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`x^2 - y^2/100`
Find the value of a, if 9a = 762 – 672
