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Factorise and solve x^2-8x+15=0

Factorise means we want to turn x 2 -8x+15=0 into the form (x+a)(x+b)=0 . We need to find the two whole numbers 'a' and 'b' which equal -8 (from the -8x part) when added together, i.e. a+b=-8 , and equal 15 ...
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Answered by Anokhi C. • Maths tutor
5003 Views

How can you tell if a noun is masculine or feminine?

Usually, if a noun ends in an E, it will be feminine, and if it ends in a consonant it is masculine. Of course, there are some exceptions to this rule but 9/10 times this will be the case.
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Answered by Olivia M. • French tutor
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The first four terms of an arithmetic sequence are : 11, 17, 23, 29. In terms of n, find an expression for the nth term of this sequence.

An arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant. We can work this out for the sequence 11, 17, 23, 29. To go from the 1st term (11) to the 2...
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Answered by Aman G. • Maths tutor
19108 Views

How do I analyse unseen poetry?

When you first read a poem, it's important to put on your detective hat! It's almost like arriving at a crime scene for the first time.To be a great detective you need to be prepared! Bring a pen and highlig...
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6245 Views

Describe how a synapse works

- An electrical impulse travels down the axon of a pre-synaptic neurone . - The movement of this electrical impulse initiates the release of chemical messengers which are called neurotransmitters . - The neu...
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Answered by Saira I. • Biology tutor
3483 Views