Question

Help please...
(pic attached)

Answer 1

use rules of exponents.
What is \[x^{\frac{3}{2}}\]

Answer 2

what is \[x^{-1}\]

Answer 3

what do you mean? its -1 ?

Answer 4

seventh root x = x^1/7
so x^15*1/7
so x^(15/7)
does this help at all...?

Answer 5

\[x^{-1}=\frac{1}{x}\]

Answer 6

8x 15/7 ?

Answer 7

no, have a look at pete's equation above

Answer 8

you currently have : 8 / (x^(15/7))

Answer 9

so to bring it up to become a numerator, what happens to the power...?

Answer 10

\[hint : \frac{ 2 }{ x ^{4} } = 2 \times x ^{-4}\]