Advertisements
Advertisements
प्रश्न
Use suitable identity to find the following product:
(3 – 2x) (3 + 2x)
Advertisements
उत्तर
By using the identity (x + y)(x – y) = x2 – y2,
(3 – 2x) (3 + 2x) = (3)2 – (2x)2
= 9 – 4x2
APPEARS IN
संबंधित प्रश्न
Use suitable identity to find the following product:
(x + 4) (x + 10)
Factorise the following using appropriate identity:
9x2 + 6xy + y2
Verify:
x3 – y3 = (x – y) (x2 + xy + y2)
Evaluate the following using identities:
117 x 83
If 9x2 + 25y2 = 181 and xy = −6, find the value of 3x + 5y
If 3x - 7y = 10 and xy = -1, find the value of `9x^2 + 49y^2`
Write in the expanded form (a2 + b2 + c2 )2
Simplify `(x^2 + y^2 - z)^2 - (x^2 - y^2 + z^2)^2`
Find the value of 4x2 + y2 + 25z2 + 4xy − 10yz − 20zx when x = 4, y = 3 and z = 2.
If \[x + \frac{1}{x} = 5\], find the value of \[x^3 + \frac{1}{x^3}\]
If \[x - \frac{1}{x} = 5\], find the value of \[x^3 - \frac{1}{x^3}\]
Simplify of the following:
(x+3)3 + (x−3)3
Find the following product:
If \[a^2 + \frac{1}{a^2} = 102\] , find the value of \[a - \frac{1}{a}\].
If the volume of a cuboid is 3x2 − 27, then its possible dimensions are
If a2 + b2 + c2 − ab − bc − ca =0, then
If `"a" - 1/"a" = 10`; find `"a"^2 - 1/"a"^2`
If `"p" + (1)/"p" = 6`; find : `"p"^4 + (1)/"p"^4`
If `x + (1)/x = "p", x - (1)/x = "q"`; find the relation between p and q.
Simplify:
(3x + 5y + 2z)(3x - 5y + 2z)
