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Whenever you see a problem involving an inequality (greater than or less than sign) it is really important to pause for a second before you go breaking any rules of mathematics. ...

This  method will only work if your x term is divisible by 2. For example x² + 6x + 12. 

You then use the halved x term (e.g. 3x) to complete the square. The beginning of your factorisat...

Whenever you are confronted with an exam question, it is crucial to take a few moments to step back and think about what the question asks you to do. Most obviously, this question asks you to write about ...

Haemoglobin is a protein made up of 4 sub-units. Each sub-unit has a molecule of un-oxygenated Iron. Oxygen covalently bonds to the Iron and is thereby carried by the blood as Oxy-haemoglobin. Oxy-haemogl...

    When inflation is due to being cost-push, the government uses supply-side policies, which manipulate and influence the supply curve in the long term, to increase the level of aggregate supply, as ment...