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Expand and simplify (3x+2) (x-5)

We expand this term by term. To make sure we expand every term, I use the beak method. To do this, draw 2 curves over the equation from the 3x to the x , and then a second curve from the x to the + 2 . Then ...
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Answered by Dominic S. • Maths tutor
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Are diffusion and osmosis the same thing?

Diffusion is defined as the movement of a substance from a high concentration to a low concentration, meaning they move from where there are lots of them to where there are fewer. Diffusion of these molecule...
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Answered by Eleanor B. • Biology tutor
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What is Le Chatelier's Principle?

Le Chatelier's Principle states that for a reaction which is reversible, where there is a change made to the reaction conditions the equilibrium position will shift to oppose the change. In answering a quest...
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Answered by Angus T. • Chemistry tutor
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Why does Aluminium react with Iron Oxide?

Aluminium is higher on the reactivity series than iron. This means that it is more reactive than iron. As a result, it displaces iron from the compound iron oxide in a displacement reaction, creating alumini...
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Answered by Angus T. • Chemistry tutor
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What is 3!/5! written in standard form?

We can write out 3! (three factorial) as 3x2x1, and we can write out 5! as 5x4x3x2x1. This means that, since 3x2x1 is on the top and the bottom of the fraction, it cancels out. This leaves us with 1 on top, ...
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Answered by David A. • Maths tutor
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