Math Is Fun Forum

Fra1990

Novice

Registered: 2024-10-09

Posts: 1

Help with simplify and expression

Hello everyone. I am sitting a GCSE exam (higher tier) as a mature student and I am doing a lot of practice at the moment. I am stuck with an expression, I would be so grateful if somebody could explain me how to solve it in simple term please. This is the expression:

      8X² x √2X½
  (   __________  )³
             4X³

Thanks

Francesco

Phrzby Phil

Member

From: Richmond, VA

Registered: 2022-03-29

Posts: 50

Re: Help with simplify and expression

I assume by "solve" you mean "simplify," as it is not an equation.

I find two things confusing in your expression:
1. Is the small "x" before the radical a "multiply" ?  If so, you can delete it.  Pretty sloppy notation.
2. Is the "1/2" under the radical supposed to be the X's exponent?

Last edited by Phrzby Phil (2024-10-10 03:11:33)

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phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,877

Re: Help with simplify and expression

Hi Fra1990 & Phrzby Phil;

If I've interpreted post #1's expression correctly, then...

Sorry, but simplifying that is beyond what I've learnt in maths...

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Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

Re: Help with simplify and expression

hi Fra1990

Welcome to the forum.

You can simplify powers by using the rules for indices. https://www.mathsisfun.com/algebra/exponent-laws.html

phrontister has tidied up your maths notation to make the expression clearer. But is that what you meant?

Another interpretation of what you've posted is:

Please post again, making it clear which is right.

When you've got x and times in an expression you can use a .  for the times to avoid confusion.

Bob

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