Question

Question.1
write all the formula of identities.
Question.2
solve:
(a) if a= 5+2√6,then find the Value of a²+1/a²
(b) if X= 3+√7, then find 4x²+1/x²
(C) rationalise it 2/3- √5
(d) prove that 1/√11 is an irrational number.
(E) find ten rational numbers between 1/3 and -1/3.
Question.3
word problems:
1. find the compound interest to the nearest rupee on rs.7500 for 2 years 4 months at 12% per annum reckoned annually.
2.calculate the difference between the compound interest and the simple interest on rs. 12,000 at 9% per annum in 2 years.
3. find the amount and compound interest on rs. 16.000 for 2 years at 15% interest being payable annually.
4. at what rate% p.a. will a sum of rs.4000 yield rs.1324 as compound interest in 3 years?
5. in what period of time will rs.12000 yield rs. 3972 as compound interest at 10% per annum if compounded annually.
Question.4
find by using identity:
1. (99.9)³
2. (2a+3b)²
3.(501)³
4. (72×68)
5. (-23)³+(15)³+(8)³​

Answer 1

Answer:

We have learned about the life of the people of Sapta Sndhu region and gangetic plain.

Could you identify any common features? Did the life of aryans developed when they

reached gangetic plains from Sapta Sindhu region? Analyse and write down important

points.