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Any odd integer can be represented by 2m+1 for some integer m (can prove that 2m+1 is always an odd number if needed). (2m+1)²=4m²+2m+2m+1=4m²+4m+1=4m(m+1)+1 simple factor...

In complete combustion, there is a sufficient supply of oxygen which is able to react with the burning hydrocarbon allowing the reaction products H₂O and CO₂ to be formed.
In in...

To achieve top marks when tackling an 'explain' question, it is important to not only have 3 reasons for why something happened, but also to prioritise and link these reasons. For example, it is not enou...

x= 9/2y= -3/2

There is a neuroscientist Mary who has been confined to a black and white room all her life, she has never seen any colour except black or white. However, she knows everything she can know about the physi...