your 1st answer is now correct. Yes you told right that we always rationalize the denominator... but still 1/√5 is more simpler... we rationalize the denominator when we have a fraction whose numerator or denominator is composed of more than 1 term. Example
Your 2nd answer(answer of the 4th question) is wrong. Take x as 1 and then see it would not be matching.
Welcome to the forum.
1. Rewrite each expression in simpler form using exponents: (6x)(6x)(6x)(6x)
Do, you know what exponents are. Exponents or power of a number is the no. of times the no. is multiplied (by itself). For more explained information Exponents Section in mif.
So, since hereis multiplied 4 times it is
In The 2nd question just expand it into the multiplication form( as bobbym had done) and then reduce it.
The 3rd question will also be the same...
Hope it helps.
Have you seen the post? Long time no reply. Are you not able to solve these problems... If you want I may tell you the solutions... I am waiting for your reply and then will send you the difficult problems of other questions also... If you want I may send you the problems of other questions also. Please reply.
The most interesting thing I have found in maths till now is the amazing relationship between Fibbonacci Series, The Golden Ratio and Nature. It has really amazed me. I also find pascal's triangle very interesting. There are 7 things that leaves me awestruck about pascal's triangle.