Advertisements
Advertisements
प्रश्न
Use identities to evaluate : (998)2
बेरीज
Advertisements
उत्तर
(998)2
(998)2 = (1000 - 2)2
We know that
( a - b )2 = a2 + b2 - 2ab
∴ (1000 - 2)2 = 10002 + 22 - 2 x 1000 x 2
= 1000000 + 4 - 4000
= 9,96,004
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Evaluate following using identities:
991 ☓ 1009
if `x + 1/x = 11`, find the value of `x^2 + 1/x^2`
If 3x - 7y = 10 and xy = -1, find the value of `9x^2 + 49y^2`
Write in the expanded form: `(x + 2y + 4z)^2`
Simplify (a + b + c)2 + (a - b + c)2
Find the following product:
(1 + x) (1 − x + x2)
If \[x + \frac{1}{x} = 3\] then find the value of \[x^6 + \frac{1}{x^6}\].
If \[x + \frac{1}{x} = 2\], then \[x^3 + \frac{1}{x^3} =\]
If a1/3 + b1/3 + c1/3 = 0, then
Evaluate the following :
1.81 x 1.81 - 1.81 x 2.19 + 2.19 x 2.19
