Advertisements
Advertisements
प्रश्न
Expand.
`(x + 1/x)(x - 1/x)`
बेरीज
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
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
संबंधित प्रश्न
Expand.
(a + 2) (a − 1)
Expand.
(p + 8) (p − 3)
Expand.
(9x − 5t) (9x + 3t)
Use the Identity (x + a)(x + b) = x2 + (a + b)x + ab to find the following:
501 × 502
Expand: (y + 4)(y - 3)
(x + a)(x + b) = x2 + (a + b)x + ______.
Multiply the following:
(x2 – 5x + 6), (2x + 7)
Using suitable identities, evaluate the following.
98 × 103
Using suitable identities, evaluate the following.
10.1 × 10.2
The following expression is the area of a rectangle. Find the possible length and breadth of the rectangle.
x2 – 3x + 2
