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Solve x^2 - 3x - 10 = 0 for x by a) factorising and b) the quadratic equation. Then draw a graph of the function, marking when it touches each of the axes.

a) We factorise to find 2 numbers a and b in (x + a)(x + b) such that a + b = -3 and whose product is -10 (ab = -10). (x + 2)(x - 5) = 0 -> x = 5 or -2b) This is a direct application of the quadratic f...

Answered by Joseph S. Maths tutor
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Does the UK suffer from a participation crisis?

Define what a participation crisis is and why it is important;A lack in public engagement in politics, this can include a lack of voting in general elections, membership in pressure groups decreasing, or ...

10612 Views

How do I make my essays more sophisticated?

As you are limited by the word count, concision is very important and as such, every sentence needs to be thought out and crafted, using grammar and vocabulary correctly.
First, you need to consider...

Answered by French tutor
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What is meant by terms 'saturated' and 'unsaturated' when applied to alkanes and alkenes? Describe a chemical test to distinguish between the liquids hexane and hexene.

Saturated – contains single bonds only.Unsaturated – contains one or more carbon-carbon double bonds.Shake each with bromine water. Hexene will decolorise bromine water, which will go from orange to colou...

Answered by Kamile S. Chemistry tutor
5576 Views

What are geometrical isomers? Explain, structurally, why geometrical isomers exist.

Molecules differing in the relative bond positions of two groups about carbon-carbon double bonds. Free rotation is not possible about a carbon-carbon double bond. Thus, groups attached to the double-bond...

Answered by Kamile S. Chemistry tutor
1559 Views

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