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Factorise 3a^2 - 9a

To factorise you need to identify 'factors', which are common features, between the different terms in an equation. In 3a^2 - 9a, the first term is 3a^2 and the second term is -9a. One common feature between...
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Answered by Hannah G. • Maths tutor
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In the poem 'About His Person', how does Simon Armitage construct identity?

In his poem 'About His Person', Simon Armitage constructs the identity of the titular 'Person' through describing the objects that surround him. The 'giveaway photograph' in his wallet gives away, so to spea...
MC
Answered by Michael C. • English tutor
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How do I differentiate between the dative and ablative cases when they have the same ending?

The only way one can tell the case of a word - especially when it has the same ending as another case - is with context. The two best ways to look at the context in this instance would be to look for signal ...
MS
Answered by Maxwell S. • Latin tutor
6160 Views

What is an action potential, and what steps are involved?

Action potentials are changes of electrical potential in a cell. The normal resting membrane potential inside cells is around -70mV. This membrane potential is maintained through the action of the Na + K + A...
CL
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How do I solve the following simultaneous equations? y = 2x -3 and 2x + 3y = 23

Equation 1 : y = 2x -3 Equation 2: 2x +3y = 23To solve these equations you use a method called substitution The information from the 1st equation is used by the 2nd one Sub in the formula for y like so: 2x +...
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Answered by Anika K. • Maths tutor
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