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    Please may I have some help on the following two questions; Question 11 and question 7 on the second picture. Thanks
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    (Original post by candyhearts)
    Please may I have some help on the following two questions; Question 11 and question 7 on the second picture. Thanks
    For 11 take it a stage at a time - for example, can you see how to simplify the first factor in the numerator?
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    (Original post by candyhearts)
    Please may I have some help on the following two questions; Question 11 and question 7 on the second picture. Thanks
    And for 7 replace m and n inside the brackets with their equivalents in terms of a, then combine indices and simplify. Equate both sides as powers of a and you should be done!
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    7)
    

a^2 = m^{yz}n^{xz}

    Substitute in m and n.

    a^2 = a^{xyz}a^{xyz}

a^2 = a^{2xyz}

2 = 2xyz

xyz = 1

    11)  x^{c^2 - c - ca + a} ?
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    (Original post by davros)
    And for 7 replace m and n inside the brackets with their equivalents in terms of a, then combine indices and simplify. Equate both sides as powers of a and you should be done!
    Thankyou, I managed to do number 7. Having a little difficulty with 11, this is what I've done so far
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    (Original post by GeneralOJB)
    7)
    

a^2 = m^{yz}n^{xz}

    Substitute in m and n.

    a^2 = a^{xyz}a^{xyz}

a^2 = a^{2xyz}

2 = 2xyz

xyz = 1

    11)  x^{c^2 - c - ca + a} ?
    Thankyou, for number 11, Im getting  x^{a^2 - 2ac + c^2 + a - c} Please could you perhaps point out where I've gone wrong
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    (Original post by GeneralOJB)
    7)
    ...
    Please don't post full solutions - it's against the forum guidelines, and it doesn't give the OP chance to have a go with hints provided.
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    (Original post by candyhearts)
    Thankyou, for number 11, Im getting  x^{a^2 - 2ac + c^2 + a - c} Please could you perhaps point out where I've gone wrong
    You've got your denominator wrong - you've somehow got (x^a)^c turning into x^{a^2} in the factor you divide by, so you've lost an a^2 that should have been there and gained another term in the exponent that should be there!!
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    (Original post by davros)
    You've got your denominator wrong - you've somehow got (x^a)^c turning into x^{a^2} in the factor you divide by, so you've lost an a^2 that should have been there and gained another term in the exponent that should be there!!
    How did I not spot that, thank you very much (Unfortunatley I cant seem to give you rep), but I appreciate you saving me from spending ages on those questions.
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    (Original post by candyhearts)
    How did I not spot that, thank you very much (Unfortunatley I cant seem to give you rep), but I appreciate you saving me from spending ages on those questions.
    No problem - for what it's worth that Q11 is one of the nastier indices questions I've seen!
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    (Original post by davros)
    No problem - for what it's worth that Q11 is one of the nastier indices questions I've seen!
    That makes me feel a little relieved
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    (Original post by candyhearts)
    Please may I have some help on the following two questions; Question 11 and question 7 on the second picture. Thanks
    nasty questions. where do you get those? i would like to crack on with them.
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    (Original post by CoolRunner)
    nasty questions. where do you get those? i would like to crack on with them.
    This book
    http://www.amazon.co.uk/gp/aw/d/1902214455
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    Thanks!
 
 
 
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