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How do you factorise and know if it is a difference of two squares ?

1. First you need to learn how to recognise the form:

Difference of two square numbers. a²- 36

(a²is a square number and 36 is also a ...

Answered by Esther L. • Maths tutor

4847 Views

What is differentiation used for?

Differentiation is used to find the gradient of a line, or curve. It can also be used to find the co-ordinates of stationary points, whether these be minimum, maximum or points of inflection. The secon...

Answered by Jennifer M. • Further Mathematics tutor

10223 Views

When should you use the SUVAT equations?

The SUVAT equations are used when acceleration is constant and velocity is changing. If speed is constant, you can use the speed, distance and time triangle. They can be used to work out initial and fi...

Answered by Jennifer M. • Physics tutor

37714 Views

How do you use the Nominative Case in German?

Although we don't use them in English, cases are really important in German!

Every noun/pronoun in a German sentence is in a particular case, depending on its function in the sentence.

Answered by Colleen A. • German tutor

6420 Views

Why is chlorine more reactive than bromine?

When they react, both chlorine and bromine need to accept an electron into their outer electron shell to complete the shell and form chloride and bromide ions. There are three factors that affect how e...

Answered by Emily W. • Chemistry tutor

140552 Views