Not quite sure what you are referring to, but I guess you are asking about the formula of (x+y)^3

= x^3 + 3x^2 • y + 3x • y^2 + y^3
(• refers to multiply)

Maths

What is (x+ )  ^3?

They would divide by mitosis. Examples include budding, hydras, vegetative propagation and strawberries. 

Biology

Do the cells in an asexual reproduction divide by mitosis or meiosi

Replace N in 5N^2 with N=3x5^2x x^3)

= 5(3 x 5^2 x x^3)^2

Using Law of indices multiply the powers in the bracket

= 5 x 3^2 x 5^4 x x^6 (after removing bracket)
= 3^2 x 5^5 x x^6

Expressed as a product of its prime factors in index form, a number N is (N = 3 x 5^2 x x^3) Express 5N^2 as a product of its prime factors in index form. Give your answer in terms of 

Condensation is the conversion of a gas to liquid state. 

Science

What is condensation?

It means to calculate or determine an answer by the use of computer or mathematics. It requires a reasonable answer or a consistent manner. 

What is computed?

- identify the subjects that you are less confident in
- make a study plan - prioritise the knowledge in the syllabus and make sure you know them
- break a large topic into small areas every day
- spaced repetition - use flashcards and test yourself everyday and after a week to recall memory - active learning is very important
- do past papers and review them - make sure u review the questions you got wrong
- ask your friends to test you, sometimes study with a group of friends and try to teach each other will help

General

What can I do to get ahead for GCSEs? I’m really worried :

Unbalanced equations usually appear in chemical equations - both sides have different number of chemical elements. 

Example
Original equation: 
NaCl + H2SO4 —> Na2SO4 + HCl

As you can see there is 1 sodium on the left hand side, but there are 2 sodium ions on the right. This is same for the hydrogen. Please note that the formula compound refers to the valency and electron configurations of the ions. 

To balance the equation, you add a number in front of the 4 compounds to make sure both sides have equal number of ions

2NaCl + H2SO4 -> Na2SO4 + 2HCl

What are unbalanced equations and how do you balance them

N represents the number of term 

A)  for the 1st three terms, just substitute n with 1,2 and 3

1st term: 3(1) + 2 = 5
2nd term: 8
3rd term: 11

B) 10th term: 3(10)+2= 32

You can check the answer by using the method: if n is the number of term, then 3n would represent multiples of 3. In this question, the answer will always be 2 more than any multiples of 3 (given n is a number)

The nth term of a sequence is 3n + 2 A) work out the first 3 terms in the sequence B) work out the 10th term in the sequenc

The equations will be provided in the data booklet, so you don’t need to specifically remember them. However, if you want to increase your speed and recognition, I suggest practise different questions and test yourself by writing the equations without looking at them. Over time you will realise how much you can recognise the equations without needing to refer to the data booklet. 

Physics

How do I remember all of the physics equations

There are a lot of ways to interpret this. In short, medical ethics are principles that doctors or healthcare professionals should do what is right ethically. For example, the 4 pillars of ethics indicates do no harm to patients. The link between medical ethics and law is that law provides the boundary of what is the right or wrong thing to do legally. There are a lot of complications to this as for example a doctor could give morphine to reduce pain, but giving it excessively might cause harm to the patient and this might be bound by the law if the intention is wrong. 

Faith Lee

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Cheltenham Ladies College

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