Write three different expressions that can be simplified to x to the sixth power?

Radii ok and nl are perpendicular to om because of the radius-tangent theorem. by definition of perpendicular, angles kom and lnm are right angles. this means that triangles kom and lnm are right triangles. angle lmn is common to both right triangles, so by the triangles kom and lnm are similar.

Select the quadratic that has root x = 8 and x = -5

The anwser cause i do not understand just plez