Past Papers’ Solutions  Edexcel  AS & A level  Mathematics  Core Mathematics 1 (C16663/01)  Year 2016  June  Q#5
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Question
Solve the simultaneous equations
Solution
We are given simultaneous equations;
We rearrange the first equation to find y in terms of x.
Substituting this from first equation in the second equation;
We have the algebraic formula;
Now we have two options.










By substituting onebyone these values of in first equation, we can find corresponding values of .
For 
For 








Hence, there are following two solutions of the given simultaneous equations;


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