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    http://www.examsolutions.net/a-level...2&solution=5.1 An+1 = 2an-c A3 = 12-3c Look at 5:25 of the video he does 2(12-3c)
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    (Original post by Chris195)
    http://www.examsolutions.net/a-level...2&solution=5.1 An+1 = 2an-c A3 = 12-3c Look at 5:25 of the video he does 2(12-3c)
    Any possibility that you could post the question
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    (Original post by Chris195)
    Look at 5:25 of the video he does 2(12-3c).
    And, he does it right.
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    (Original post by jack.hadamard)
    And, he does it right.
    I got the correct answer too? how so.
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    (Original post by Chris195)
    I got the correct answer too? how so.
    Do I know how you got the correct answer?
 
 
 
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