Advertisements
Advertisements
Question
Evaluate the following without multiplying:
(999)2
Advertisements
Solution
(999)2
= (1000 - 1)2
= (1000)2 - 2(1000)(1) + (1)2
= 1000000 - 2000 + 1
= 998001.
APPEARS IN
RELATED QUESTIONS
Expand the following, using suitable identity:
(3a – 7b – c)2
Factorise the following:
64m3 – 343n3
What are the possible expressions for the dimensions of the cuboids whose volume is given below?
| Volume : 3x2 – 12x |
Simplify the following
`(7.83 + 7.83 - 1.17 xx 1.17)/6.66`
Write in the expanded form:
`(2 + x - 2y)^2`
Write in the expanded form: (-2x + 3y + 2z)2
Find the following product:
\[\left( \frac{3}{x} - \frac{5}{y} \right) \left( \frac{9}{x^2} + \frac{25}{y^2} + \frac{15}{xy} \right)\]
Find the following product:
(3x − 4y + 5z) (9x2 +16y2 + 25z2 + 12xy −15zx + 20yz)
Find the square of `(3a)/(2b) - (2b)/(3a)`.
Simplify by using formula :
`("a" + 2/"a" - 1) ("a" - 2/"a" - 1)`
