Question

2. a) Find (a+b)⁴- (a-b)⁴. b) Hence evaluate (√(3+√(2)×e^(4−(√(3−√(2)×e^(4​

Answer 1

Answer:

The Universe is 13.7 billion years old

If you think that is amazing, perhaps equally remarkable is the fact that we know this to better than 1% precision. Credit goes to the WMAP team for gathering all the information needed to come up with this number. The information is based on measurements made on the CMBR.

Older methods which have contributed to confirming this value include measurements of the abundances of certain radioactive nuclei. Observations made on globular clusters, which contain the oldest stars, have also pointed to values close to this.