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    what is (256y^256)^1/8

    why is it 2y^32 and not 2y^2

    The mark scheme states that the answer is 2y^32
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    I'm not exactly good at explaining maths however if you 8th root 256 to get 2, you can't just 8th root its power.

    Lets do the fourth root of 4^4

    Would you agree that:

    4^4 = 256 (just a coincidence)

    And the fourth root 4^4 is therefore 4. This is the correct way.

    However, you are rooting the power to get this:

    4^2 - this is wrong

    4^2 is 16 and the fourth root of 16 is 2.

    I know this is an awful example but I'm awful at explaining things + I'm also doing GCSE .-.
 
 
 
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