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Make y the subject of the formula p=((x+y)/5)^(1/2)

To "make y the subject" basically means to get an expression in the form y= a function of the other variables (in this question, x and p). This will involve adding, subtracting, multiplying and div...
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Answered by Tom W. • Maths tutor
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Distinguish between liberal and realist international relations theory

Firstly, liberals take an optimistic view of human nature in relation to the state. It is a school of thought which advocates peaceful co-operation and 'soft' forms of power rather than military resources (N...
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How do you use factor theorem to show an algebraic term is a factor of a polynomial?

For example show that x + 3 is a factor of p(x) = x 3 - 5x 2 - 8x + 48 We need to show that when x = -3, p(x) = 0. If this is the case then x + 3 is a factor of p(x) putting x = -3 into the polynomial we obt...
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Answered by Elliot T. • Maths tutor
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How do you multiply out two brackets?

Let us use the example of (x + 3)(x + 5) The main thing we have to remember is to multiply every term in the first bracket by every term in the second bracket. An easy way to make sure we've done this is to ...
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Answered by Elliot T. • Maths tutor
7157 Views

What is dimensional analysis and how is it used?

When one is faced with a problem requiring derivation of an equation, they might be asked to use dimensional analysis . This is a concept that involves analyzing the units of known quantities (usually it is ...
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Answered by Christina I. • Physics tutor
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