Advertisements
Advertisements
प्रश्न
Expand.
`(x + 1/x)(x - 1/x)`
योग
Advertisements
उत्तर
`(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
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
संबंधित प्रश्न
Expand.
(m − 4)(m + 6)
Expand.
(13 + x) (13 − x)
Expand.
(3x + 4y) (3x + 5y)
Expand: `(m + 3/2)(m + 1/2)`.
Expand (2n – 1)(2n + 3)
Simplify using identities
(3p + q)(3p + r)
x2 + (a + b)x + ab = (a + b)(x + ab)
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 + 19x – 20
The following expression is the area of a rectangle. Find the possible length and breadth of the rectangle.
x2 + 9x + 20
