Currently unavailable: until 01/09/2016
Degree: MSc International Development (Masters) - Edinburgh University
|Maths||A Level||£26 /hr|
|Natural Sciences: Physics||Masters Degree||2.1|
|Natural Sciences: Physics||Bachelors Degree||2.1|
|Applied Mathematics||Advanced Higher||A|
|Religious, Moral and Philosophical Studies||Advanced Higher||A|
Step 1 - Identify the difference between the required form of the answer and the expression to be simplified:
It can be seen that in order to simplify the expression we need to somehow get rid of the denominator.
Step 2 - Attempt a method to get rid of the denominator:
The best way to get rid of the denominator is to multiply it by (sqrt(5)+1). In order to keep the expression the same we must do the same to the numerator as well.
This gives us,
Step 3 - Carry out the necessary calculations:
The top parts of the fractions multiply together and the bottom parts of the fractions multiply together.
For the top part this gives us,
(7+sqrt(5))*(sqrt(5)+1) = 7*sqrt(5)+7+5+sqrt(5)
For the bottom part this gives us,
(sqrt(5)-1)*(sqrt(5)+1) = 5+sqrt(5)-sqrt(5)-1 = 4
Dividing the top part by the bottom part gives us,
Step 4 - Check that the answer is in the correct form.
The question asks for an answer in the form,
Our answer can be written in this format with a = 3 and b = 2.see more