Advertisements
Advertisements
प्रश्न
Evaluate: `(2"x"-3/5)(2"x"+3/5)`
बेरीज
Advertisements
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 using appropriate identity:
4y2 – 4y + 1
Find the cube of the following binomials expression :
\[\frac{3}{x} - \frac{2}{x^2}\]
If a − b = 4 and ab = 21, find the value of a3 −b3
Evaluate of the following:
933 − 1073
Simplify of the following:
\[\left( \frac{x}{2} + \frac{y}{3} \right)^3 - \left( \frac{x}{2} - \frac{y}{3} \right)^3\]
If a + b = 8 and ab = 6, find the value of a3 + b3
Use identities to evaluate : (998)2
Use the direct method to evaluate :
`("a"/2-"b"/3)("a"/2+"b"/3)`
If `"a" + 1/"a" = 6;`find `"a" - 1/"a"`
Simplify:
(2x - 4y + 7)(2x + 4y + 7)
