SOLVE PLEASEEE (FOR 20 POINTS)

for a ratonal, the expression only makes sense if the denominator is not 0, since if that occurs then the expression becomes undefined, a division by 0 is always undefined, for this case, when does that occur?  Let's set the denominator to 0 and solve for "x".

well then, let's see what happens when x = 1

so the only values that makes sense is anything but x > 1, because a smaller value of 1 will give us an imaginary value from the root, so the only values that makes sense are namely { x | x ∈ ℝ; x > 1 }

i believe the answer is the polygon, heptagon.