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    Can someone explain how to do this question please? 6(c)

    Name:  ImageUploadedByStudent Room1431178723.284486.jpg
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    And does anyone know anywhere I can get questions like these with solutions?

    Thanks in advance!


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    (Original post by mica-lwe)
    Can someone explain how to do this question please? 6(c)

    Name:  ImageUploadedByStudent Room1431178723.284486.jpg
Views: 379
Size:  127.2 KB

    And does anyone know anywhere I can get questions like these with solutions?

    Thanks in advance!


    Posted from TSR Mobile
    The notation means:

    33 X (Sum of first 25 terms** minus sum of the first k terms**) = 67 x sum of the first k terms**

    EDIT: when i say numbers, i should say terms.
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    Sorry I should've posted my working, I understand what it means and what it wants but not how to work through the question

    Name:  ImageUploadedByStudent Room1431179367.606670.jpg
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    (Original post by mica-lwe)
    Sorry I should've posted my working, I understand what it means and what it wants but not how to work through the question Name:  ImageUploadedByStudent Room1431179367.606670.jpg
Views: 67
Size:  146.6 KB


    Posted from TSR Mobile
    treat sigma(n to k) as x, then expand the brackets and simplify
 
 
 
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