Advertisements
Advertisements
Question
Factorise the following:
`(x + 1)(x - 1) - 5/4`
Sum
Advertisements
Solution
Given:
`(x + 1)(x - 1) - 5/4`
We know that,
(a + b) (a – b) = a2 – b2
Hence,
`(x + 1) (x - 1) - 5/4`
= `x^2 - 1 - 5/4`
= `(x^2 - 9/4)`
= `(x^2 - 3/4)^2`
= `(x + 3/4) (x - 3/4)`
shaalaa.com
Is there an error in this question or solution?
