Help

[maiden lichen]

sorry for the lyrics

[crude abyss]

What have you learnt so far?

because x^(-n) = 1/(x^n), hopefully this knowledge will solve your problem

[maiden lichen]

I don't understand anything that is inside the root, I do understand what is outside.

[crude abyss]

Is the root just the top of the fraction or the entire fraction?

[maiden lichen]

It is the complete fraction

[crude abyss]

So it's $ sqrt((1/8 + 1/9) / 51)

$ 1/8 + 1/9 = 17/72

(17/72) / 51 = 1 / 216

And the rest you can do from there

[maiden lichen]

Thank you