Advertisements
Advertisements
प्रश्न
Simplify by using formula :
`("a" + 2/"a" - 1) ("a" - 2/"a" - 1)`
Advertisements
उत्तर
`("a" + 2/"a" - 1) ("a" - 2/"a" - 1)`
= `("a" - 1)^2 - (2/"a")^2`
= `"a"^2 + 1 - 2"a" - (4)/"a"^2`
(Using identity : (a + b)(a - b) = a2 - b2).
APPEARS IN
संबंधित प्रश्न
If 2x + 3y = 8 and xy = 2 find the value of `4x^2 + 9y^2`
If a + b + c = 9 and a2+ b2 + c2 =35, find the value of a3 + b3 + c3 −3abc
If \[x - \frac{1}{x} = \frac{1}{2}\],then write the value of \[4 x^2 + \frac{4}{x^2}\]
If a + b + c = 9 and ab + bc + ca = 23, then a2 + b2 + c2 =
If the volume of a cuboid is 3x2 − 27, then its possible dimensions are
Find the squares of the following:
9m - 2n
Simplify by using formula :
(1 + a) (1 - a) (1 + a2)
If a - b = 10 and ab = 11; find a + b.
If `x + (1)/x = 3`; find `x^2 + (1)/x^2`
Simplify:
(2x - 4y + 7)(2x + 4y + 7)
