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solve 2x^2+4x-7=0

Notice that this is a quadratic. First you should try factorisation, then if unsuccessful try completing the square (or the quadratic formula). In this example, factorisation is not possible (I can this furt...
KW
Answered by Katie W. • Maths tutor
8663 Views

What is analysis and how do I show this?

It is likely you have been told to PQA your essay answers- point, quote, analysis. The analysis is very important as it shows why you're using that quote to illustrate that point as well as highlighting any ...
GM
10749 Views

What name is given to the elements on group 7 of the periodic table and what happens to their boiling point as you go down the column?

Halogens. Boiling point increase as you go down the group. (This is because the size of the molecules increase as you go down the group, which increases the strengths of van der Waals forces)
LW
Answered by Leo W. • Chemistry tutor
10256 Views

What is the process by which plants and algae remove carbon from the atmosphere?

Photosynthesis. This question may throw some students off because: 1: They may be used to the question phased as something like 'By what process do plants generate glucose' 2: They may not be aware that alga...
LW
Answered by Leo W. • Biology tutor
4406 Views

What are the most important features of a personal statement?

Personal statement is all about being precise about why you opt for the particular degree choice. After outlining the reasons, you should clearly identify how your overall academic experience together with o...
VB
2694 Views