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Write x^2 – 10x + 12 in the form (x – a)^2 + b , where a and b are integers.

This is a past exam question from a real GCSE paper, and is an example of "completing the square." I will show you 4 steps for answering this question. ¬¬¬ The first step is to check whether the x^...
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Answered by Emily Y. • Maths tutor
27967 Views

How do I work out a genetic cross?

Note the phenotypes of the parents, work out whether they are homozygous or heterozygous. Choose letters to represent the alleles. The upper case letter should represent the dominant alleles and the lower ca...
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Answered by Hannah D. • Biology tutor
6647 Views

How do I write an A grade Spanish film,book or region essay ?

Firstly, you should look at the structure of the essay before starting to write. There should be an introduction, a paragraph for each idea and then a conclusion. The introduction should include an introduct...
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Answered by Hannah D. • Spanish tutor
12030 Views

How do we form the present continuous ?

The present continuous is used to describe what is happening in that moment. To form it we use: Estar in the present tense Yo estoy (I am) Tu estas(you are) El/Ella esta(he/she is) Nosotros estamos(we are) V...
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Answered by Hannah D. • Spanish tutor
5265 Views

The Large Hadron Collider (LHC) of circumference 27km uses magnetic fields to accelerate a proton repeatedly in a circular path. Calculate the flux density of a uniform magnetic field required for the proton to travel at a tenth of the speed of light.

Firstly, we must clearly set out the information we have. The particle in question is a proton, which has a mass of 1.67e-27 kg, and a charge of 1.6e-19 C. The path it takes has a circumference of 27000m, me...
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Answered by Aashish M. • Physics tutor
8620 Views