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How to factorise equations, or expand factorised equations?

Factorising x 2 -100: As there is no common element in x 2 or 100, we know this must consist of two sets of brackets not just one. we know both brackets must contain and x, and that which ever two numbers mu...
HH
Answered by Harleen H. • Maths tutor
3441 Views

How can DNA mutations alter the structure of a protein?

Regions of an organism's genome that code for proteins are known as genes. The sequence of deoxyribonucleic acids (bases) in a gene directly translates to the sequence of amino acids in the protein it encode...
LB
Answered by Lewis B. • Biology tutor
3957 Views

What should be in my personal statement?

A personal statement is much like the cover letter of a CV; it's a small piece of introductory writing at the top of a CV that is personalised to the position you are applying for. This means that, for the m...
TW
2168 Views

Describe 2 ways in which the body prevents entry of microorganisms into the body

-acid in the stomach kills any pathogens-skin acts as a physical barrier to pathogens-hair in the nose and ears trap any pathogens -saliva & mucous trap pathogens. The bronchi have villi that help move p...
SH
Answered by Sara H. • Biology tutor
4306 Views

(Core 2) Show that the region bounded by the curve y = 7x+ 6 - (1/x^2), the x axis and the lines x = 1 and x = 2 equals 16

The question wants us to confirm the answer so the marks will be in the method unlike most questions which require you to find the answer. How to approach this is by thinking what ways can we calculate areas...
LJ
Answered by Lewis J. • Maths tutor
4459 Views