Advertisements
Advertisements
प्रश्न
Evaluate: `(2"x"-3/5)(2"x"+3/5)`
बेरीज
उत्तर
`(2"x"-3/5)(2"x"+3/5)`
`=(2"x")^2-(3/5)^2` .......[ ∵ (a − b) (a + b) = a2b2]
`=4"x"^2-9/25`
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Factorise the following:
64m3 – 343n3
Evaluate following using identities:
991 ☓ 1009
If \[x + \frac{1}{x} = 5\], find the value of \[x^3 + \frac{1}{x^3}\]
If \[x - \frac{1}{x} = 7\] ,find the value of \[x^3 - \frac{1}{x^3}\]
Evaluate the following:
(98)3
Find the following product:
(3x − 4y + 5z) (9x2 +16y2 + 25z2 + 12xy −15zx + 20yz)
Find the square of `(3a)/(2b) - (2b)/(3a)`.
Expand the following:
`(2"a" + 1/(2"a"))^2`
Simplify:
(7a +5b)2 - (7a - 5b)2
If `49x^2 - b = (7x + 1/2)(7x - 1/2)`, then the value of b is ______.
