Question #28a84

2 Answers
Sep 27, 2016

(x^4)/(6y^8)

Explanation:

I am assuming that the expression is ((x^4/3)/y^8) * 1/2.

What we have here is x^4/3 divided by y^8 and this result multiplied by 1/2

That is (x^4/3÷y^8)1/2

When dividing fractions we change division to multiplication and tun the second fraction' upside down'

rArrx^4/3÷y^8/1=x^4/3xx1/y^8=x^4/(3y^8)

Now multiply this result by 1/2

rArrx^4/(3y^8)xx1/2=x^4/(6y^8)

Sep 27, 2016

Assuming that the question is supposed to read as (x^(4/3)/y^8)^(1/2)

we can proceed in two ways...

Recall: x^(1/2) is another way of writing a square root. sqrtx

(x^(4/3)/y^8)^(1/2) = sqrt((x^(4/3)/y^8))

The square root of a fraction can be split...

= sqrt((x^(4/3)))/sqrt(y^8)

To find the square root ... divide the index by 2.

sqrt((x^(4/3)))/sqrt(y^8) = x^(2/3)/y^4

Recall: (x^m)^n = x^(mn) " "larr multiply the indices

(x^(4/3)/y^8)^(1/2) = x^(4/3xx1/2)/y^(8xx1/2)

=x^(2/3)/y^4