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Equation 1) x2 +y2=5 (Equation 2) y=3x+1
The value of x is the same in both equations, as is the value of y. Therefore we can use one to work out the other. for exa...
(Equation 1) 5x + 2y = 20 (Equation 2) x + 4y= 13As we know the values for x and y are the same in both equations, we can use them to find out the values for both, In order to do this we need to tak...
The first step of solving this equation to find out what x is, is to factorise it.
This means grouping it into a set of double brackets which will take the form (x+a)(x+b)=0.
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This question is a classic example of a problem which might catch some students out, if due care is not implemented.
Eleri is investing £3700 at 2% per annum compound inter...
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