Advertisements
Advertisements
Question
Expand.
`(x + 1/x)(x - 1/x)`
Sum
Solution
`(x+1/x)(x-1/x)`
= `(x)^2 + {1/x + (-1/x)}x + (1/x) xx (-1/x)`
= `x^2 + (1/x - 1/x)x - 1/x^2`
= `x^2 - 1/x^2`
shaalaa.com
Is there an error in this question or solution?
RELATED QUESTIONS
Expand.
(3x + 4y) (3x + 5y)
Expand.
`(1/y + 4)(1/y - 9)`
Expand: (y + 4)(y - 3)
Expand: (x - 3)(x - 7).
Expand (2n – 1)(2n + 3)
Simplify using identities
(3p + q)(3p + r)
Multiply the following:
(x2 – 5x + 6), (2x + 7)
The following expression is the area of a rectangle. Find the possible length and breadth of the rectangle.
x2 – 6x + 8
The following expression is the area of a rectangle. Find the possible length and breadth of the rectangle.
x2 – 3x + 2
The following expression is the area of a rectangle. Find the possible length and breadth of the rectangle.
x2 – 7x + 10
