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    does anyone know how to work out 8 to the power to thirds?! i cant work it out n they always seem to have a question similar to tht? any hwlp greatly appreciated! thnx very much
    heather xx
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    (Original post by heather2)
    does anyone know how to work out 8 to the power to thirds?! i cant work it out n they always seem to have a question similar to tht? any hwlp greatly appreciated! thnx very much
    heather xx
    Think of it as (8^(1/3))^2 = 2^2 = 4

    MB
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    ow! thanks very much! tht was lots of help
    xxx
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    Remember that anything to the power of 1/3 is just the cube root of that number.

    Likewise, ^1/2 = the square root, ^1/4 = the 4th root (dunno what the proper name is sorry).

    Good luck tomorrow.. I'm doing OCR Higher.
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    Hey!

    Lol- we had that question this morning when i did a past paper with my maths teacher and i got a different answer to you all! The way i was shown to work it out was:

    cube root of 8= 2

    2 squared= 4

    So therefore the answer is 4 and to display your working out you just put the cube root symbol and the 8 in brackets with the square outside of it.

    Good luck for tomorrow!

    Lou
    xxx
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    O God please ignore me! I did it the same way as the rest of you- i just didnt read everyone's response properly! Accept my apologies!

    Lou
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    thanks very much i can do them now u never know - i might even do well 2moro...or maybe not but we'll see! im doing AQA higher
    xxx
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    i dunno?! sorry! personally im just not revising things that obvioulsy u need a calc for like sine rule things like tht! am going now byeee
    xxx
 
 
 
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