Please help with negative algebra questions

[Sjay87*]

I’ve spent all weekend trying to figure out these two questions. I’ve looked at rationalising surds, negative exponents and equations. I still can’t work these out. Can someone please provide a breakdown of how these should be done.

 

[Deleted member 4993]

I’ve spent all weekend trying to figure out these two questions. I’ve looked at rationalising surds, negative exponents and equations. I still can’t work these out. Can someone please provide a breakdown of how these should be done.

In the first problem, in the denominator,

Is it:

\(\displaystyle \left( x^{-3}\right) * \frac{2}{3} \)

or

\(\displaystyle \left( x^{-3}\right) ^{ \frac{2}{3}} \)

Please share your detailed work - the one you feel is most promising. That will give us an idea about where to begin to help you.

 

[Sjay87*]

It’s the second one.

 

[Deleted member 4993]

In the first problem, in the denominator,

Is it:

\(\displaystyle \left( x^{-3}\right) * \frac{2}{3} \)

or

\(\displaystyle \left( x^{-3}\right) ^{ \frac{2}{3}} \)

Please share your detailed work - the one you feel is most promising. That will give us an idea about where to begin to help you.

So now where is your detailed work - the one you feel is most promising.

 

[Sjay87*]

So this is how I’ve worked it out.