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Solve: 6x + 3 = 3x + 9

There are a few ways to tackle this particular style of problem. First off we can try doing it without using any bracket theory and just focus on the raw numbers (a somewhat simpler approach). Step 1: We're ...
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Answered by Calum G. • Maths tutor
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What is photosynthesis?

Photosynthesis is the process by which plants make glucose. Light energy is absorbed by chorophyll which is a green substance found in chloroplasts in some plant cells and algae. This light energy is used to...
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Answered by Olivia R. • Biology tutor
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prove that (3x+1)^2 - (3x-1)^2 is a multiple of 4 for all positive integer values of x

(3x + 1) 2 = 9x 2 + 6x + 1 (3x - 1) 2 = 9x 2 - 6x + 1 (9x 2 + 6x + 1) - (9x 2 - 6x + 1) = 12x 12x/4 = 3x Therefore for all positive integers of x the result is a multiple of 4
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Answered by Katie J. • Maths tutor
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Describe how deforestation is causing the change in the amounts of different gasses in the atmosphere

Deforestation is the process of removing trees, usually for fuels or for timber. The removal of trees means that there is less photosynthesis taking place. Photosynthesis is the process of removing carbon di...
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Answered by Katie J. • Biology tutor
15953 Views

Differentiate the following function u = Cos(x3)

u = Cos(x 3 ) To differentiate this function we will use the chain rule. Firstly we will set x 3 to another variable name such as v. So now v = x 3 . Lets differentiate this. dv/dx = 3x 2 We can now differen...
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Answered by Serena B. • Maths tutor
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