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# an easy question...but i don't know the rule! watch

1. Simplify:

√(x^4) y^3 / x^2 3√(y^6)

The square root of x to the power 4, times y-cubed ALL OVER x squared, times the cube root of y to the power 6

its just that i do not know the rule for omitting the 3√ from the 3√(y^6).

Help appreciated!
2. that is not an easy question, i do A level maths and have absolutly no idea what to do.
3. lol well i'm doing 1st year degree maths...

it's about cancelling the indices using the usual rules, x³ times x³ = x^6 etc etc

the answer is apparently just y. but i dont see why (no pun intended)
4. (Original post by Reloaded)
Simplify:

?(x^4) y^3 / x^2 3?(y^6)

The square root of x to the power 4, times y-cubed ALL OVER x squared, times the cube root of y to the power 6

its just that i do not know the rule for omitting the 3? from the 3?(y^6).

Help appreciated!
To find square root divide power by 2.
To find cube root divide power by 3
The cube root of x to the power of 12 is x to the power of 4
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5. (Original post by steve2005)
To find square root divide power by 2.
To find cube root divide power by 3
The cube root of x to the power of 12 is x to the power of 4
ohhhhhh seeeeen...
yes it makes sense now. i wasnt aware of the "To find cube root divide power by 3" etc rule.

Thanks all.

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