Question

.

Answer 1

Substitute like crazy and what do you get?

Answer 2

Ignore the 7x-54 and the 8x.

This is a logic problem. Focus on R, S and T.

I'll start you off, RS=ST what does this imply? Assuming these are just standard variables and not matrices or anything crazy:

We can divide both sides by S to get R =T.

Which you can use in the other formulae.

m<RST -> m<ST^2

Now can we use this for m<STU?

Answer 3

m<TU and m<TT ignore the S because constant.

TU = 8x and T^2 = 7x -54

and TU>m and TT>m so either T and U are both negative or both positive.

Sorry that's as far as I can get :S.

Answer 4

If only that > was an = sign...