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Show that (x+2)(x+3)(x+5) can be written in the form ax^3 + bx^2 + cx +d, where a,b, c and d are positive integers

I would tell them to start multiplying out the first brackets (x+2)(x+3)! I would do this by timesing x by everything in the second bracket and then 2 by everything in the second brakcet! Giving the answer x...
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Answered by Bridget P. • Maths tutor
8352 Views

Describe how living plants are involved in the carbon cycle.

Think about what carbon is used for, and also what plants are required for. Plants take in carbon dioxide from their surroundings, which enables them to undergo photosynthesis. At night, plants respire, rele...
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Answered by Ellie W. • Biology tutor
3127 Views

Give three properties that are the same for radio waves and microwaves

They travel at the same speed through air.They travel at the same speed through a vacuum.They are both transverse waves. Other answers that are accepted: they can be reflected, refracted, diffracted, and abs...
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Answered by Ellie W. • Physics tutor
15377 Views

What is an acid?

An acid is a substance which releases hydrogen ions (protons) when added to water. pH values of less than 7 are considered acidic, with 1 indicating it is a strong acid.
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Answered by Ellie W. • Chemistry tutor
4302 Views

Outline the process of neuronal communication between two neurones

Ensure that your answer is precise, without too much waffle - this can confuse examiners and you'll lose easy marks! Take it step by step: First, the neurotransmitter , acetylcholine , is released from the p...
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Answered by Ellie W. • Biology tutor
2993 Views