ANSWER ASAP!!
Answer should only contain positive exponents .

2n/n^2
I got n/n^2 .

Step-by-step explanation:

(exponential rule for fraction is the number subtract each other)

(from the top n exponent of 1 minus bottom exponent of2 (1-2=-1))

since the n is a -1 exponent to make it positive you put it in the denominator

(the reason it's not n/n^2 is that the two cannot just disappear or be taken away unless you are solving for something and the n/n^2 can also be simplified into the 1/n)

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4