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    (Original post by junayd1998)
    Yes, but you're notation is a bit wrong, first line in red. Drop the sigma and just write  a_1 +a_2 + a_3
    You're answers are fine. Also, for future reference, when you have  6k^2 +8k+2 = 0 you can divide through by 2, so that  3k^2 +4k + 1 = 0 it might be easier to factorise.
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    (Original post by NotNotBatman)
    Yes, but you're notation is a bit wrong, first line in red. Drop the sigma and just write  a_1 +a_2 + a_3
    You're answers are fine.
    oh alright. Thank you.
 
 
 
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